176. A light body A and a heavy body B have equal kinetic energies of translation. Then

1. 1. A has larger momentum than B

   
   
   

   2. B has larger momentum than A

   
   
   

   3. A and B have same momentum

   
   
   

   4. none of the above

   
   
   

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   N/A

   Correct Option: B

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177. In order that a floating object be in stable equilibrium, its centre of buoyancy

1. 1. Should be vertically above its centre of gravity

   
   
   

   2. Should be vertically below its centre of gravity

   
   
   

   3. Should be horizontally in line with its centre of gravity.

   
   
   

   4. May be anywhere

   
   
   

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   N/A

   Correct Option: A

   N/A

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178. If hole is bored along a diameter of the earth and a stone is dropped into the hole it will

1. 1. Reach the centre of the earth and stop there

   
   
   

   2. Reach the other side of the earth and stop there

   
   
   

   3. Execute S.H.M. about the centre of the earth

   
   
   

   4. Execute oscillatory, but not simple harmonic motion about the centre of earth

   
   
   

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   N/A

   Correct Option: C

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179. An inflated balloon is floating on the surface of water. It is pushed so as to submerge completely and then released. It will

1. 1. Remain submerged at the same place

   
   
   

   2. Sink to the bottom

   
   
   

   3. Come back to its earlier position

   
   
   

   4. First sink to the bottom and then come up

   
   
   

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   N/A

   Correct Option: C

   N/A

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180. An inflated balloon rises to a definite height once it starts going up. This balloon can not rise any further because at that height

1. 1. Atmosphere pressure reduces to zero

   
   
   

   2. Acceleration due to gravity reduces to zero

   
   
   

   3. Density of the balloon reduces to zero

   
   
   

   4. Apparent weight of the balloon reduces to zero

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

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