101. A sphere, a cube and thin circular plate, all having the same mass and made of the same material are heated to the same temperature and then allowed to cool, which of them cools fastest?

1. 1. Sphere

   
   
   

   2. Cube

   
   
   

   3. Circular plate

   
   
   

   4. All at the same rate

   
   
   

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   N/A

   Correct Option: C

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102. Device used to measure very high temperature is

1. 1. Pyrometer

   
   
   

   2. Thermometer

   
   
   

   3. Bolometer

   
   
   

   4. Calorimeter

   
   
   

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   N/A

   Correct Option: A

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103. An instrument used to measure humidity is

1. 1. Anemometer

   
   
   

   2. Hygrometer

   
   
   

   3. Thermometer

   
   
   

   4. Pyrheliometer

   
   
   

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   N/A

   Correct Option: B

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104. At upper atmosphere, an astronaut feels

1. 1. Extremely hot

   
   
   

   2. Slightly hotter

   
   
   

   3. Extremely cool

   
   
   

   4. Slightly cooler

   
   
   

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   N/A

   Correct Option: C

   N/A

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105. The wavelength of the radiation emitted by a body depends upon

1. 1. The nature of the surface

   
   
   

   2. The area of the surface

   
   
   

   3. The temperature of the surface

   
   
   

   4. All of the above factors

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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