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If action force acting on a body is grav...

If action force acting on a body is gravitational in nature, the reaction force

A

may be a contact force

B

must be gravitational too

C

may be gravitational or contact force

D

may be a force of any origin

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The correct Answer is:
B
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
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  6. Internal forces can change

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  7. A nucleus moving with velocity bar(v) emits an alpha-particle. Let the...

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  8. A shell is fired from a cannon with a velocity V at an angle theta wit...

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  9. A block moving in air breaks in two parts and the parts separate

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  10. A ball with initial momentum P collides with rigid wall elastically. I...

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  11. A body is projected vertically upwards. Its momentum is gradually decr...

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  12. Assertion: A rocket moves forward by pushing the surrounding air backw...

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  13. A ball falls towards the earth. Which of the following is correct?

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  14. A man is standing in the middle of a perfectly smooth 'island of ice' ...

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  15. A block of weight W is suspended from the mid-point of a rope whose en...

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  16. Figure shows a heavy block kept on a frictionless surface and being pu...

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  17. A body of weight w1 is suspended from the ceiling of a room through a...

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  18. The apparent weight of a body

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  19. The apparent weight of a freely falling body is

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  20. A lift is ascending with a constnat speed V. A passenger in the lift d...

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