101. Which of the following physical quantities do not have same dimensions?

1. 1. Force and Preesure

   
   
   

   2. Work and Energy

   
   
   

   3. Impulse and Monentum

   
   
   

   4. Weight and Force

   
   
   

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   N/A

   Correct Option: A

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102. If the momentum of a body is increased by 50%, its K.E. will increase by

1. 1. 100%

   
   
   

   2. 125%

   
   
   

   3. 150%

   
   
   

   4. 200%

   
   
   

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   N/A

   Correct Option: B

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103. A body is lifted by a man to height of 1 m in 30 seconds. Another man lifts the same mass to the same height in 60 seconds. the work done by them are in the ratio

1. 1. 1 : 2

   
   
   

   2. 1 : 1

   
   
   

   3. 2 : 1

   
   
   

   4. 4 : 1

   
   
   

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   N/A

   Correct Option: B

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104. A bag is dropped from an aeroplane flying horizontally at a constant speed. Neglecting air resistance, where will the aeroplane be when the bag reaches the ground?

1. 1. Firectly above the bag

   
   
   

   2. Ahead of the bag

   
   
   

   3. Behind the bag

   
   
   

   4. Fata is not sufficient

   
   
   

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   N/A

   Correct Option: A

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105. If a bomb dropped from an aeroplane explodes in mid-air

1. 1. Its KE increases

   
   
   

   2. Its total energy decreases

   
   
   

   3. Its total energy decreases

   
   
   

   4. Its total momentum decreases

   
   
   

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   N/A

   Correct Option: A

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