**Physics Gravitation Important MCQ with Answers**

In the initial academic examinations of the Army, Navy, and Pakistan Air Force (PAF), among other defense forces, Physics gravitation important MCQ with answers are essential. The important subject of physics is covered in these gravitation multiple-choice questions (MCQs), which is a crucial component of the physics exams given in the academic evaluations for the Navy Supply Branch, Navy Operation Branch, and PN Cadets.

Navy Ordnance Branch, Navy Weapon Engineering Branch, and Navy Education Branch personnel in particular need to have a firm grasp of gravity. Aspiring candidates can improve their knowledge and excel in their chosen defense force vocations by mastering these Gravitation multiple-choice questions.

**Gravitation MCQ (Part-1)**

**Newton’s law of universal gravitation states that the force of attraction between two objects is proportional to the __________ of their masses. **(Product)

**According to the law, the force of gravity between two objects decreases as the __________ between them increases. **(Square of the distance)

**The relativity constant in the law of gravity is denoted by the letter __________. **(G)

**The SI unit of gravitational constant is __________. **(NÂ·m^{2}/kg^{2})

**The gravitational force between two objects is inversely proportional to the __________ between them. **(square of the distance)

**The law of gravity applies to all objects in the universe, regardless of their __________. **(size or mass)

**If the mass of one object is doubled and the distance between them remains the same, the gravitational force between the objects __________. **(double)

**When the distance between two objects is halved, the gravitational force between them is __________. **(increases by a factor of four)

**If the mass of one body triples while the mass of the other remains the same, the gravitational force between the bodies __________. **(triple)

**Gravity is a __________ force, that means it acts along a line joining the centers of bodies. **(central or radial)

**The gravitational force between two objects is affected by the presence of other objects. This is known as __________. **(gravitational disturbance or perturbation)

**The gravitational force between two objects is always __________.** (attractive)

**The law of gravity helps explain the movement of __________ around the Sun. **(planets)

**The gravitational force of the Earth is responsible for the acceleration of objects near its surface, usually called __________. **(g or acceleration due to gravity)

**The law of gravity is fundamental to understanding the dynamics of celestial bodies, including the formation of __________ and the motion of galaxies.** (letters)

**A gravitational field is a region of space around an object where another object experiences __________ caused by gravity.** (force)

**Physics Gravitation MCQ**s with Answers

A thorough understanding of gravity is essential for prospective GD Pilots in the Pakistan Air Force (PAF). PAF Aeronautical Engineering applicants can benefit greatly from the Physics Gravitation MCQ, which can help them efficiently prepare for their academic exams.

Aspirants to the PAF Air Defense Branch, PAF Logistics Branch, and PAF Administration & Special Duty Branch would also find these multiple-choice questions to be quite pertinent. People can increase their knowledge base and raise their chances of success in the PAF competitive tests by carefully studying these gravitation MCQs.

**Gravitation MCQ(Part-2)**

**The strength of a gravitational field is directly proportional to the __________ of the object creating the field. **(mass)

**The magnitude of the gravitational field is __________, it has both magnitude and direction.** (vector)

**The unit used to measure the strength of the gravitational field is __________. **(newtons per kilogram or N/kg)

**The direction of the gravitational field is always an object that creates a __________ field.** (towards)

**The gravity field lines represent the gravity field __________ and __________. **(direction, force)

**The distance between the gravitational field lines indicates the __________ of the gravitational field.** (force)

**Gravitational lines of force always point __________ in the direction of gravity. **(in the same direction)

**The gravitational field of a hollow spherical object is __________. **(null or zero)

**The gravitational field at a point outside a spherical object depends on the center of the object’s __________ and __________.** (mass, distance)

**The __________ of an object determines its effect on the gravitational field. **(mass)

**The gravitational field is a conservative field, which means that the work done by gravity on an object depends only on the points __________ and __________. **(initial, final)

**The gravitational field near the Earth’s surface is approximately __________. **(9.8 N/kg or 9.8 m/sÂ²)

**Gravitational field force __________ when moving away from a massive object. **(gets smaller or smaller)

**The gravitational field is responsible for the __________ of bodies orbiting larger celestial bodies. **(motion or rotation)

**Gravitational potential energy is the energy of an object due to its __________ in a gravitational field.** (position)

**The higher an object is in the gravitational field, the __________ is its gravitational potential energy.** (greater)

**Gravitational potential energy depends on the __________ of the object, the acceleration due to gravity, and the __________ reference point.** (mass, height)

**The unit used to measure gravitational potential energy is __________. **(joule or J)

**The __________ level is often chosen as the reference point for measuring gravitational potential energy. **(earth or zero)

**Gravitational potential energy is a form of __________ energy. **(potential or stored)

**Gravitational potential energy is converted to __________ energy when an object falls or moves downward in a gravitational field. **(kinetic)

**The formula for calculating gravitational potential energy is __________. **(PE = mgh)

**The “m” in the gravitational potential energy equation represents the __________ of the object.** (mass)

**The “g” in the gravitational potential energy equation represents the __________ due to gravity. **(acceleration or gravitational field strength)

**The “h” in the gravitational potential energy equation represents the object’s __________ reference point. **(height or vertical motion)

**When an object is at the highest point of its motion, its gravitational potential energy is __________.** (maximum or largest)

**Gravitational potential energy is __________, ie. it can only be defined relative to a reference point. **(relative or proportional)

**When an object doubles in height, its gravitational potential energy is __________. **(doubles)

**Gravitational potential energy is __________, that is, it can be positive, negative or zero depending on the position of the object in relation to the reference point. **(scale or sign)

**Escape velocity is the minimum velocity an object needs to escape the __________ of a celestial body.** (gravitational field or attraction)

**The escape velocity depends on the __________ of the celestial body.** (mass)

**The escape velocity does not depend on the __________ of the object. **(mass or size)

**The formula for calculating escape velocity is __________. **(v = sqrt(2gR))

**In the escape velocity formula, “v” represents __________. **(escape velocity)

**Physics Gravitation MCQ with Answers**

Mathematical competency questions on gravitation are very important in the Technical Cadet Course, which is the Army’s entry-level program. Candidates for Army Education Officer positions must have a strong background in physics, particularly gravitational theory.

In a similar vein, Army EME Officers must demonstrate their grasp of this essential material. Candidates can improve their academic performance by mastering the ideas and mathematics connected to gravitation by studying these physics gravitation mcq with answers

**Gravitation MCQ(Part-3)**

**In the escape velocity formula, the “g” represents the __________ due to gravity. **(acceleration or gravitational field strength)

**In the escape velocity formula, the “R” represents the __________ of the celestial body.** (radius)

**The escape velocity is directly proportional to the __________ of the celestial body.** (square root of the radius)

**The escape velocity from the Earth’s surface is approximately __________. **(11.2 km/s or 25,020 mph)

**If the escape velocity of a celestial body is greater than the speed of light according to relativity, then nothing can __________. **(escape or exceed this speed).

**Escape velocity is the speed required to overcome the __________ of gravity and reach infinity. **(drag or drop)

**The point in an elliptical orbit where a planet is farthest from the Sun is called __________.** (feel)

**The __________ of a railroad track is a measure of its stretch or “flexibility.” **(eccentricity)

**The eccentricity of a circular orbit is __________. **(zero or 0)

**Kepler’s second law, also known as the law of equal areas, states that a planet sweeps out an equal amount of __________ in an equal __________ time. **(regions, intervals)

**According to Kepler’s second law, a planet moves __________ when it is closer to the sun and __________ when it is further away. **(faster, slower)

**Kepler’s third law, also known as the harmonic law, relates the __________ of a planet’s orbit to its __________ period.** (magnitude or radius, orbit or period)

**The square of a planet’s orbit is proportional to the __________ of its orbit. **(cubic or third power)

**Kepler’s third law of relativity is denoted by __________. **(k)

**Kepler’s third law can be expressed as TÂ² = k Ã— __________Â³, where T is the orbital period and r is the orbital radius. **(r or radius)

**The orbital period of a planet is __________ relative to its average distance from the Sun. **(directly or positively)

**Kepler’s laws are based on observations and data collected by __________. **(astronomer or scientist)

**Kepler’s laws apply not only to planets that go around the Sun, but also to other objects that go around __________. **(stars or celestial bodies)

**Kepler’s laws played a crucial role in the formation of __________ and the understanding of celestial mechanics. **(astronomy or astrophysics)

**Einstein’s theory of general relativity changed our understanding of __________ and __________.** (gravity, spacetime)

**According to general relativity, gravity is not a force, but a __________ of spacetime caused by mass and energy.** (curvature)

**The theory describes gravity as a __________ curvature in relation to mass and energy.** (space-time or the fabric of space-time)

**In general relativity, gravity is due to objects following __________ paths in curved spacetime.** (geodesic or curve)

**The theory predicts that massive objects can create __________ in spacetime, just as a heavy sphere creates an indentation in a stretched sheet of rubber. **(bends or curvatures)

**The bending of light caused by massive objects such as stars is known as __________. **(gravitational lensing)

## Important Physics **Gravitation MCQ**s

Beyond the ranks of the defense force, Gravitation MCQs hold great significance. These Gravitation multiple-choice questions are also beneficial for civilians who aspire to work in the armed forces. Gravitation is a topic covered in several of the civilian recruitment exams for the military services, including the Army, Navy, and PAF.

Aspiring candidates can improve their knowledge and raise their chances of passing these fiercely competitive exams by using these multiple-choice questions as study tools.

**Gravitation MCQs (Part-4)**

**The phenomenon where time moves more slowly in a strong gravitational field is called __________.** (time dilation)

**According to general relativity, the presence of mass and energy can cause __________, which is the stretching or compression of space-time. **(space curvature or space-time distortion)

**The equation E = mcÂ² derived from general relativity applies to __________ and __________.** (energy, mass)

**Dealing with black holes, objects with incredibly strong gravity that even light cannot escape, is a prediction of __________. **(General Relativity)

**Albert Einstein first published General Relativity in __________.** (1915)

**If an object’s initial velocity is less than its escape velocity, it is __________.** (fall back or are pulled back)

**If an object’s initial velocity is equal to its escape velocity, it is __________. **(leave gravity field at zero velocity or escape)

**The escape velocity from a celestial body decreases as you move __________ its surface.** (away or farther away)

**The escape velocity from a celestial body increases as __________ increases. **(mass or size)

**Kepler’s first law states that the orbit of a planet around the Sun is __________ and the Sun is somewhere __________.** (ellipse, focus)

**The point in an elliptical orbit where a planet is closest to the Sun is called __________.** (perihelion)

**Gravitation MCQs with Answers** for Forces Initial Tests

For candidates hoping to join the Pakistan Air Force, Army, or Navy, the availability of multiple-choice questions on gravitation that are specifically designed for their academic exams is an invaluable tool. These gravitation MCQ with answers include a broad spectrum of gravitational subjects and are made to meet the standards of several branches, including as the Army Education Officers, PAF Air Defence Branch, Navy Education Branch, and Navy Ordnance Branch.

Through the use of these multiple-choice questions, applicants can maximize their readiness, improve their grasp of gravity, and eventually raise their chances of passing the defense force exams.

**Gravitation MCQ (Part-5)**

**General relativity successfully explained an observed anomaly in the orbit of Mercury known as Mercury __________. **(Print)

**Einstein’s theory predicted the existence of __________, which was later confirmed by the discovery of pulsars.** (gravitational waves)

**General relativity has been tested and confirmed by several observations, such as the bending of the Sun’s __________ during a solar eclipse. **(starlight or light)

**General relativity is based on an understanding of the __________ and __________ of the universe on both large and small scales.** (structure, dynamics)

**Orbital mechanics is the study of the motion of objects __________. **(space or orbits)

**The path an object follows in space under the influence of gravity is called its __________.** (orbit)

**An object in orbit remains __________ to move around the central body. **(continuous or perpetual)

**The shape of a railway track is usually __________. **(ellipse)

**The point of the orbit closest to the central body is called __________. **(perigee or perifocus)

**The point in the orbit farthest from the central body is called __________. **(apogee or apofocus)

**The __________ of the road is the measure of its stretch or curvature. **(eccentricity)

**The eccentricity of a circular orbit is __________. **(zero or 0)

**The speed at which an object must travel to maintain a stable orbit is called __________. **(orbital velocity)

**The __________ of an orbiting object affects its orbital period. **(mass or size)

**The time it takes for an object to complete one orbit is called its __________. **(orbital period or period)

**Kepler’s laws of planetary motion provide a mathematical description of __________. **(orbital mechanics)

**The force that keeps an object in orbit is the force __________. **(centripetal or gravitational)

**To achieve a higher orbit, an object must increase __________. **(energy or speed of orbit)

**A Hohmann transfer orbit is a fuel efficient transfer between two __________. **(Circular or Elliptical Orbits).

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