According to the universal law of gravitation, the force of attraction between bodies is directly proportional to the product of their masses is inversely proportional to the square of the distance between them. Gravitational force is a central force and conservative in nature. So take this quiz and know about gravitation.
1. Who gives the universal law of gravitation?
A. Einstein
B. Sir Isaac Newton
C. Both of the above
D. None of the above
2. An object is said to be......... When it is falling freely under the action of gravity.
A. Heavy
B. Light
C. Weightless
D. None of the above
3. Acceleration due to gravity at poles is...... Then at the equator.
A. Smaller
B. Equal
C. Greater
D. All of the above
4. The minimum velocity required to through a body away from the surface of the earth so that it may not return is called...,...
A. Final velocity
B. Initial velocity
C. Escape velocity
D. Orbital velocity
5. The force of gravitation between two bodies does not depend on...
A. Their separation
B. Product of their masses
C. The sum of their masses
D. The gravitational constant
6. The acceleration due to gravity...
A. Has the same value everywhere in space
B. Has the same value everywhere on a the earth
C. Varies with the latitude on the earth
D. Is Greater on the Moon due to its smaller diameter
7. When an object is thrown up, the force of gravity.......
A. Is opposite to the direction of motion
B. Is in the same direction as the direction of motion
C. Decreases as it Rises up
D. Increases as it Rises up
8. The escape velocity of an object from the surface of the earth is 11.6 km/s. If the mass of the earth is increased four times, the resultant escape velocity would be.....
A. 11.6 km/s
B. 11.6*2 km/s
C. 11.6*4 km/s
D. 11.6*1/2 km/s
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