PAF Physics Tests for Airman with Answers
The PAF Initial Tests for Airman are a series of tests that candidates must pass in order to be eligible for enlistment in the PAF as an Airman, Airwoman, or Female Medical Assistant. The tests are designed to assess a candidate’s basic academic skills, intelligence, and physical fitness.
The PAF Physics Test is one of the Initial Tests that candidates must pass. The test is designed to assess a candidate’s basic knowledge of physics concepts, such as mechanics, electricity, and magnetism. The test is a multiple-choice test with more than 100 questions. The questions cover a wide range of physics topics, including: Motion, Force, Energy, Work, Power, Heat, Thermodynamics, Waves, Sound, Light, Electricity and Magnetism.
Candidates who are preparing for the PAF Physics Test should focus on studying the following topics:
- Motion: Kinematics and dynamics, including linear motion, rotational motion, and projectile motion
- Force: Newton’s laws of motion, gravity, and friction
- Energy: Kinetic energy, potential energy, and work-energy theorem
- Work:Â Power and efficiency
- Heat: Temperature, specific heat, and heat transfer
- Thermodynamics:Â The laws of thermodynamics and their applications
- Waves: Mechanical waves, electromagnetic waves, and sound waves
- Sound:Â The properties of sound and its propagation
- Light:Â The properties of light and its propagation
- Electricity: Electric charge, electric field, electric current, and electric circuits
- Magnetism: Magnetic field, magnetic force, and electromagnetic induction
Candidates can find a variety of resources to help them prepare for the PAF Physics Test, including books, websites, and online practice tests. It is important to start preparing early and to practice regularly.
PAF Physics Test Past Experiences
Candidates who have taken the PAF Physics Test in the past have reported that the test is challenging, but fair. The questions are well-written and cover a wide range of physics topics. Candidates who have prepared well for the test typically report that they were able to answer most of the questions correctly. Important questions of PAF Physics tests are given here which are very important for all PAF initial tests including Airman, Airwoman and FMA.
- Q. Proton is _______ heavier than electron.
- Ans: 1836 times
- Q. Water waves are also called ________.
- Ans: Mechanical
- Q. Sound waves are also called _______.
- Ans: Longitudinal
- Q. A measure of the opposition to current flow in an electrical circuit is called ______.
- Ans: Resistance
- Q. What is Unit of Current?
- Ans: Ampere
- Q. How many Categories of waves are?
- Ans: 3
- Q. Human ear cannot hear less than_______.
- Ans: 20Hz
- Q. Silent whistle is used to call dogs whose frequency lies between ________.
- Ans: 20000 to 25000hz
- Q. When mass of bob increases by 3 times its Time Period ______.
- Ans: Remains Same
- Q. When a ray of light enters from denser to rare medium then it bends ______ from the normal.
- Ans: Away
- Q. What is bad conductor in Water, Wood, and Sticker?
- Ans: Water
- Q. Astronaut uses radios in space because ______ can not travel in space.
- Ans: Sound
- Q. Which rays have high penetrating power?
- Ans: Gamma rays
Past PAF Physics Tests MCQs for Airman Solved
- Q. Which rays have more ionization energy/ power?
- Ans: Alpha Rays
- Q. Rate of flow of charges is called ______.
- Ans: Current
- Q. To measure current Ammeter is connected in _______ circuit.
- Ans: Parallel
- Q. Value of K in air is ______.
- Ans: 9 x 109
- Q. In Coulomb Law, Size of charges is ______.
- Ans: Very Small
- Q. One complete round trip of Simple Pendulum is called ______.
- Ans: Vibration
- Q. Time taken to complete one round trip is called ______.
- Ans: Time Period
- Q. Light enters into human eye through_____.
- Ans: Cornea
- Q. Hook’s law is_____.
- Ans: F = -kx
- Q. The frequency higher than 20,000 Hz which creates disturbance for normal human ear is called _______.
- Ans: Ultrasonic
- Q. The frequency less than 20 Hz for normal human ear is called _______.
- Ans: Infrasonic
- Q. Elephants use sound of_______ frequency for communication among them?
- Ans: less
- Note: Rhinos, hippos, elephants, whales, octopuses, pigeons, squid, cuttlefish, cod, Guinea fowl, etc. communicate via infrasonic sounds.
- Q. When the mass of bob increases 3 times, then what will be the effect on time period of simple pendulum?
- Ans: Remains same
- Q. A lens which is thin at the center and thick from edges is called______.
- Ans: Concave
- Q. The energy possessed by body due to its motion is called _____.
- Ans: Kinetic Energy
- Q. The energy passed by body due to its position called _____.
- Ans: Potential Energy
- Q. The property that resists the change position called _____.
- Ans: Inertia
- Q. 1 horse power is equal to _____ Watt.
- Ans: 746
- Q. If velocity is double the K.E will be ______ times greater.
- Ans: 4
- Q. Unit of Petential Energy (P.E) is ______.
- Ans: Joule
- Q. Sir Issac Newton gave Gravitational Law in _______.
- Ans: 1665 or 1666
- Q. Electric wire produces which field aroud it?
- Ans: Magnetic Field
- Q. Unit of Energy is ______.
- Ans: Joule
- Q. Gravity of moon is _____ time less than the Earth.
- Ans: 1/6
- Q. Energy stored in Dam is called _______.
- Ans: Potential Energy
- Q. Kelvin is the Unit of _____.
- Ans: Temperature
- Q. Displacement is a ____ quantity.
- Ans: Vector
- Q. If m=50, h = 30 then find Potential Energy (P.E)?
- Ans: 14700 or in round figure 15000N
PAF Physics Tests MCQs for Airman Practice
- Q. Pascal is equl to _____.
- Ans: Nm-2
- Q. Unit of Power is called ______.
- Ans: Watt
- Q. Which thing has high heat capacity?
- Ans: Water
- Q. 1 Giga is equal to _____.
- Ans: 109
- Q. Who gave idea of Gravity?
- Ans: Newton
- Q. Unit of Light is _____.
- Ans: Lux / Candela
- Q. Sound waves are also called _____?
- Ans: Longitudinal
- Q. A lens which is curved inside and thick at edges is called ____?
- Ans. Concave
- Q. To find ratio of speed of light in air and speed of light in medium we use which law?
- Ans. Refraction law
- Q. What is used to store chemical charge?
- Ans. Capacitor
- Q. In hooks law force is directly proportional to……
- Ans. Displacement
- Q. In thermal expansion when temperature of the substance increases then its ______ also increase.
- Ans: Volume
- Q. Loudness of a sound depends on___?
- Ans. Amplitude
- Q. Metals are good conductors due to____?
- Ans. Free electrons
- Q. Which is good insulator in Plastic, Metal, Water, and Silver.
- Ans. Plastic
- Q. In AC generator current is ____?
- Ans. Alternating
- Q. Highly penetrating rays are called ____?
- Ans. Gamma
- Q. In gases heat is transferred through_____.
- (a)Conduction (b) Convection (c) Radiation (d) All
- Q. If the distance between the ends of metal is increased than the rate of flow of heat is _____.
- Ans: decreased
- Q. How many methods of transfer of heat?
- Ans: 3
- Q. Thermal conductivity of water is ____.
- Ans: 0.598 W/m·K
- Q. Thermal conductivity of brass____.
- Ans: 146,87 W/m.K
- Q. Thermal conductivity of 304 stainless steel is _____?
- Ans: 1503 W/m.K.
- Q. Loudness is directly proportional to ____?
- Ans: the square of the amplitude of a sound wave or Simply Amplitude
- (a)pitch (b) intensity (c) quality (d) Amplitude
- Q: Who discovered gravity?
- A: Sir Isaac Newton
- Q. What is Zero Degree Equation?
- Ans. A zero polynomial is the one where all the coefficients are equal to zero. So, the degree of the zero polynomial is either undefined, or it is set equal to -1.
- Q. How do you find the degree of 0?
- Ans: The degree of the zero-degree polynomial (0) is not defined. Detailed Answer: The polynomial 0 has no terms at all, and is called a zero polynomial. Because the zero polynomial has no non-zero terms, the polynomial has no degree.
- A polynomial in which the degrees of all the variables is 0 is called a zero degree polynomial. For example- 6 x 0 , − 9 a0 . Therefore, any integer, positive or negative is a zero degree polynomial.
- Q. Newton’s First Law of Equation is also called ?
- Ans: Law of Inertia
- The property of a body to remain at rest or to remain in motion with constant velocity is called inertia. Newton’s first law is often called the law of inertia.
- Q. If a car covers 15 km distance in 1 Ltr then in 90 Ltrs, how much distance will it cover?
- Ans: 1350 km
- Q. If we sell 15 copies in 150 Rupees then what will be price of 9 copies?
- Ans: Rs. 90
- Q. What is Potential Difference?
- Ans: Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit.
- Q. What is Vector?
- Ans: A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields and weight.
- Q. What is Kinetic Energy?
- Ans: Kinetic energy is the energy of motion, observable as the movement of an object or subatomic particle. Every moving object and particle have kinetic energy. A person walking, a soaring baseball, a crumb falling from a table and a charged particle in an electric field are all examples of kinetic energy at work.
- Q. What is formula of Potential Energy?
- Ans: mgh
- Q. Which energy is being used in Dam?
- Ans: Hydroelectric power is a renewable energy source which harnesses the power of moving water to produce electricity.
- Q. What is definition of Power?
- Ans: the rate of doing work, it is the work done in unit time. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines is given in terms of Horsepower (hp), which is approximately equal to 745.7 watts.
- Q. What is definition of Watt?
- Ans: The watt (abbreviated W) is the International System of Units’ (SI) standard unit of power (energy per unit time), the equivalent of one jouleper second.
- Q. What is Scalar?
- Ans: a physical quantity that is completely described by its magnitude. Examples of scalars are volume, density, speed, energy, mass, and time.
Pat Experiences of PAF Physics Tests for Airman and FMA
- Q. 1 Mega is equal to ______?
- Ans: 106
- Q. Sound waves are which types of waves?
- Ans: Longitudinal Waves
- Q. Gemma rays are _____?
- Ans: a form of electromagnetic radiation (EMR)
- Q. Which rays have high ionization power?
- Ans: Alpha Particles
- Q. Unit of Current is _____?
- Ans: Ampere
- Q. What is Definition of Current?
- Ans: Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms.
- Q. Definition of Resistance?
- Ans: Resistance is a measure of the opposition to current flow in an electrical circuit.
- Q. Define Velocity?
- Ans: Velocity defines the direction of the movement of the body or the object.
- Q. Dot and Cross product are equal at which angle?
- Ans: 45 Degree
- Q. Rate of change of momentum is called ____?
- Ans: Force
- Q. If a body is moving downward its weight _____?
- Ans: Decrease
- Q. Sound is not affected by pressure at ______?
- Ans: Constant Temperature
- Q. What is displacement?
- Ans: Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude.
- Q. What is unit of EMF?
- Ans: Electromotive force (EMF) is equal to the terminal potential difference when no current flows. EMF and terminal potential difference (V) are both measured in volts.
- Q. Displacement is which type of quantity?
- Ans: Vector Quantity
- Q. What is difference between K.E and P.E?
- Ans: Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts. However, it isn’t affected by the environment outside of the object or system, such as air or height. On the other hand, kinetic energy is the energy of an object or a system’s particles in motion.
- Q. What is Newton Law?
- Ans: Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
- Q. Joule is a _____ quantity.
- Ans: Scalar
- Q. Sand Formula is _____.
- Ans: SiO2
- Q. The value of ‘g’ is _____.
- Ans: 9.8 m/sec2
- Q. Boiling point of Water is _____.
- Ans: 100 °C
- Q. Capacitor _____ the charges.
- Ans: Store
- Q: A convex mirror of focal length f forms an image which is 1/n times the object. The distance of the object from the mirror is
- Ans: (n-1)f
- Q: Consider a concave mirror of focal length 50 cm. Where should the object be placed so that its image is twice the size of the object and inverted
- Ans: 75 cm
- Q: An object 2 cm high is placed at a distance of 16 cm from a concave mirror, which produces 3 cm high inverted image. What is the focal length of the mirror?
- Ans: -9.6 cm
- Q: An erect image 3 times the size of the object is obtained with a concave mirror of radius of curvature 36 cm. What is the position of the object?
- Ans: -12 cm
- Q: An object is placed at infinity in front of the convex mirror of radius of curvature 40 cm. How far is the image behind the mirror?
- Ans: 20 cm
- Q: The image formed by a convex mirror of focal length 30cm is a quarter of the object. What is the distance of the object from the mirror?
- Ans: -90 cm
- Q: Convex mirror is used to form an image of the object. Which of the following statements is wrong?
- Ans: The image is real
- Q: A lens having a focal distance of 30 cm is placed in front of an object, which is located at 1m from it. Where is an image of the object located?
- Ans: 42.85 cm
- Q: The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is
- Ans: f/x
- Q: In a concave mirror experiment, an object is placed at a distance x1 from the focus and the image is formed at a distance x2 from the focus. The focal length of the mirror would be
- Ans: √x1x2
- Q. Mirror having a curved reflecting surface are called as:
- Ans: Spherical Mirrors
- Q. How many types of spherical mirrors?
- Ans: 2
- Q. Spherical mirror with reflecting surface curved inwards is called ……………
- Ans: Concave Mirror
- Q. Type of spherical mirror are:
- Ans: 2 (Concave & Convex)
- Q. Pole lies on the surface of ………………..
- Ans: Spherical Mirrors
- Q. What is a spherical mirror with a reflecting surface curved outwards called?
- Ans: Convex Mirror
- Q. How is the pole of a spherical mirror generally represented?
- Ans: a. p
- Q. What is the center of a sphere of which the reflecting surface of a spherical mirror is a part called?
- Ans: b. Centre of Curvature
- Q. Where does the center of curvature lie in relation to the spherical mirror?
- Ans: b. Inside
- Q. In the case of a concave mirror, where does the center of curvature lie in relation to the reflecting surface?
- Ans: c. Outside
- Q. In the case of a concave mirror, what is the nature of the image when the object lies beyond the center of curvature?
- Ans: C. Real, inverted, and diminished
- Q. Short-sight in a human eye can be corrected by using which type of lens?
- Ans: B. Concave lens
- Q. Mirage occurs because of which optical phenomenon?
- Ans: B. Total internal reflection by layers of air
- Q. How many images are formed of an object in two mirrors placed at right angles to each other?
- Ans: C. Four
- Q. What type of mirror is used in the head mirror used by E.N.T. doctors?
- Ans: A. Concave
- Q. What kind of image does the eye lens form on the retina?
- Ans: C. An inverted, real image of the object on the retina
- Q. What is used to make a periscope?
- Ans: B. Concave mirror
Pat Experiences of PAF Physics Tests for Airman and FMA
- Q. What type of mirror is used in anti-shop-lifting devices?
- Ans: A. Concave mirror
- Q. When a stick is immersed in water and appears to be bent, which optical phenomenon is responsible?
- Ans: C. Refraction
- Q. What is the power of a concave lens?
- Ans: B. Negative
- Q. What type of lenses are used in projectors?
- Ans: A. Convex lens
- Q. Why do light rays emerging from a cinema machine spread wide on the screen?
- Ans: D. Refraction
- Q. What should be the minimum vertical size of a plane mirror for you to see your full image when standing 1 m in front of it?
- Ans: B. 2 m
- Q. What type of mirror is used for the headlight of a car?
- Ans: A. Spherical concave
- Q. What is the radius of curvature of a plane mirror?
- Ans: B. Infinity
- Q. What is the nature of the image when an object is placed at the focus of a concave mirror?
- Ans: D. Real, inverted, highly enlarged at infinity
- Q. What kind of image is created by a concave lens?
- Ans: A. Real and smaller
- Q. What type of mirror is used in the view-finding mirror of a vehicle?
- Ans: A. Convex mirror
- Q. What is the back surface of mirrors coated with?
- Ans: B. Silver
- Q. How does a spherical air bubble behave when a ray of light passes through it within a piece of glass?
- Ans: A. Converging lens
- Q. Which of the following substances has high resistance to flow?
- (a) Honey (b) Thick tar (c) Motor oil (d) All of these
- Ans: (b) Thick tar
- Q. The raindrop falling from the sky reaches the ground with what characteristic?
- (a) Constant terminal velocity (b) Constant gravitational acceleration (c) Variable acceleration (d) Variable
- Ans: (a) Constant terminal velocity
- Q. When is work done equal to the heat exchanged if ____ is kept constant?
- (a) V (b) P (c) T (d) All
- Ans: (b) P
- Q. Who was the first Governor-General of Pakistan?
- Ans: M. Ali Jinnah
- Q. What are rays with more ionization power called?
- Ans: Alpha rays
- Q. What are rays with more penetrating power called?
- Ans: Gamma rays
- Q. What is the unit of current?
- Ans: Ampere
- Q. What is the unit of power?
- Ans: Joule per Second or Watt
- Q. What is KWh the unit of?
- Ans: Energy
- Q. What is the unit of potential difference?
- Ans: Volt or Joule per Coulomb
- Q. The process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar is called _____.
- Ans: Photosynthesis
- Q. The transfer of oxygen from the outside environment to cells within tissues, as well as the removal of carbon dioxide in the opposite way is called ____.
- Ans: Respiration
- Q. When does the process of photosynthesis usually occur?
- Ans: Daytime
- Q. What does respiration not contain?
- Ans: Oxygen
- Q. Which food can cause a heart attack?
- Ans: Sugar, Salt, Fats, All
- Q. How can we remove heat from the body?
- Ans: By going into a cold place
- Q. How does heat transfer in gases typically occur?
- Ans: Convection
- Q. Which capacitor is used to store chemical charge?
- Ans: Electrolytic
- Q. What is the heat transfer in solids called?
- Ans: Conduction
- Q. What principle is the hydraulic press based on?
- Ans: Pascal’s law
- Q. Why do hot air balloons rise in the air?
- Ans: Due to less density
- Q. Which substance can conduct electricity?
- Ans: Diamond
- Q. What type of mirror or lens is used when “q” is positive?
- Ans: Concave
- Q. What type of mirror or lens is used when “q” is negative?
- Ans: Convex
- Q. What are the characteristics of a liquid?
- Ans: It has a definite volume but does not have a definite shape.
- Q. In which direction does cork move on water?
- Ans: Upward and downward
- Q. How is a galvanometer connected to function as an ammeter?
- Ans: Low resistance in series
- Q. What is the boiling point and freezing point of water on the Celsius scale?
- Ans: Boiling at 100°C and freezing at 0°C
PAF Physics Tests for Practice of Airman and Female Medical Asstt
- Q. What is the rate of change of momentum called?
- Ans: Force
- Q. What is another name for a diverging lens?
- Ans: Concave lens
- Q. In oscillatory motion, which direction does a restoring force act?
- Ans: Towards the mean position
- Q. Why do balloons fly in the air?
- Ans: Due to less density
- Q. What type of image is formed when “f” (focal length) is positive?
- Ans: Positive image
- Q. What type of image is formed when “f” (focal length) is negative?
- Ans: Negative image
- Q. What is the point where all lines meet after reflection called?
- Ans: Principal focus
- Q. How many bytes are in 1 kilobyte (1kb)?
- Ans: 1024 bytes
- Q. Which law is used to check the purity of metal?
- Ans: Archimedes’ law
- Q. What is the definition of frequency?
- Ans: Frequency is the number of oscillations or cycles of a periodic wave that occur in one second, typically measured in Hertz (Hz).
- Q. What is the definition of time period?
- Ans: Time period is the time it takes for one complete cycle of a periodic wave to occur, representing the reciprocal of frequency. It is measured in seconds.
- Q. What is the latent heat of vaporization for a substance?
- Ans: The latent heat of vaporization is the amount of heat energy required to change a unit mass of a substance from a liquid state to a vapor (gas) state at a constant temperature and pressure.
- Q. How is sea breeze a result of radiation?
- Ans: Sea breeze is a result of differential heating and cooling of land and water. During the day, land heats up more quickly than water, causing warm air to rise over the land. This creates a lower-pressure area over the land. Cooler air from the sea moves in to replace it, creating a sea breeze.
- Q. In Coulomb’s law, what is the force directly proportional to?
- Ans: In Coulomb’s law, the force between two point charges is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them.
- Q. What is the efficiency of an ideal system?
- Ans: The efficiency of an ideal system is 100%, meaning that all the input energy is converted into useful output energy without any losses. It represents a perfect conversion of energy.
- Q. What is the definition of radiation?
- Ans: Radiation is the process of energy transmission through the emission of electromagnetic waves or particles. It can refer to various forms of energy, such as heat, light, or ionizing radiation, and it occurs through the propagation of waves or particles in a vacuum or a medium.