116. An iron piece and a wooden piece have equal weights in air. If they are removed from air to vacuum

1. 1. The iron piece appears to weight more

   
   
   

   2. The wooden piece appears to weigh more

   
   
   

   3. There is no change in the weight of either

   
   
   

   4. None of the above.

   
   
   

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   N/A

   Correct Option: B

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117. Which of the following physical quantities have the same dimensions?

1. 1. Momentum and impulse

   
   
   

   2. Power and young's modulus

   
   
   

   3. Energy and angular momentum

   
   
   

   4. Force constant and moment of inertia

   
   
   

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   N/A

   Correct Option: A

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118. Which of the following physical quantity is dimensionless?

1. 1. Angle

   
   
   

   2. Strain

   
   
   

   3. Specific gravity

   
   
   

   4. All of these

   
   
   

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   N/A

   Correct Option: D

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119. A body moves with a constant speed along a curved path its acceleration

1. 1. Is zero

   
   
   

   2. Is parallel to its velocity

   
   
   

   3. Can make any arbitrary angle with its velocity

   
   
   

   4. Is perpendicular to its velocity

   
   
   

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   N/A

   Correct Option: D

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120. If the radius of the earth's orbit becomes one fourth of the present value, the deviation of one year will become

1. 1. 8 times

   
   
   

   2. 4 times

   
   
   

   3. 1 / 8 times

   
   
   

   4. 1 / 4 times

   
   
   

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   N/A

   Correct Option: C

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