CH-5 Circular Motion Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-5 Circular Motion" Click on "Start Quiz" To Continue... 1. The angle through which a body moves is called: Angular displacement Angular velocity Angular acceleration None of these None 2. The angular acceleration is produced by : Momentum Torque Pressure Power None 3. One radian is equal to: 47.3° 57.3° 67.3° 59.3° None 4. Unit of angular velocity in SI unit is: Rad/s m/s Degree/s Revolution/s None 5. Radian is defined as the angle subtended at the center of circle by an: Arc whose length equal to radius of circle Arc whose length less than radius of circle Arc whose length greater than radius of circle None of these None 6. The dimension of angular acceleration is: T T² T⁻² LT None 7. A body of mass 4 kg moves along a circle of radius of 2 m with a constant speed of 4 m/s. The centripetal force is: 32 N 16 N 20 N 64 N None 8. When torque acting on a system is zero, which of the following is constant: Linear momentum force Angular momentum Impulse None 9. In case of planets, the necessary acceleration is provided by: Coulombs force Centripetal force Gravitation force None of these None 10. The apparent weight of a man in a lift moving down with an acceleration of 9.8 m s is: Zero 9.8N 19.6N Infinity None 11. The mud flies off the tyre of a moving bicycle in the direction of: Towards the center Tangent of the tyre Along the radius Along the motion None 12. The minimum number of communication satellites required to cover the whole earth is: 4 3 2 5 None 13. Pull of earth on a mass of 20 kg on the surface of the earth is: 20 N 196 N 19.6 N 197 N None 14. The rate of change of angular momentum of a body is: The applied torque The applied force Both A & B None of these None 15. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of a man is: mg mg - ma mg + ma None 16. The total weight of a body acts as: Its center of gravity Its center Its one end Its other end None 17. The value of 'g' at the centre of the earth is: Infinite Double Zero None of these None 18. Geo-stationary satellite completes one rotation around earth in: 3 hours 6 hours 12 hours 24 hours None 19. A cricketer spins the ball before bowling to: Give it downward deflection Give it upward deflection Keep it straight None of these None 20. Suppose a body of cylindrical shape is called down on an inclined plane of height h. It contains: Transnational K.E Rotational K.E Both A & B None of these None 21. If the earth stops rotating weight of a body on the equator: Inceases Remains constant Decreases None of these None 22. Height of closest orbit of the satellite above the earth is: 100 km 160 km 250 km 320 km None 23. Centripetal force performs: Maximum work Minimum work Negative work No work None 24. When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by: Mass of a body Velocity of body Tension in the string None of these None 25. Which theory of gravitation is better: Newton Einstein Compton Plank None 26. Global positioning system can be formed by _____ artificial satellites: 22 42 3 24 None 27. If a solid sphere rolls on a horizontal surface, the ratio of its rotational K.E. to its total K.E. is: 1:3 2:7 7:3 None of these None 28. The geo-stationary satellite are used for: Word communication Weather observation Navigation All of above None 29. Which electromagnetic wave are used as medium in satellite communication system: Microwaves Radio waves Infrared waves ultraviolet waves None 30. Entire populated earth, surface is covered by: Four Three Two None of these None 31. A body becomes weightless: Spaceship orbiting the earth Outside the field free region On the earth's centre All of above None 32. The axis of rotation of a rotating body in the absence of external torque: Countinuously changes Remain fixed in direction Both A & B None of these None 33. The acceleration due to gravity: Same value at every place Same value everywhere on the surface of the earth Varies with altitude None of these None 34. The product of the mass m of the rotating body and the square of radius of gyration is called: Moment of inertia Torque Linear momentum None of these None 1 out of 7 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
