41. Surface tension depends on

1. 1. Nature of the liquid

   
   
   

   2. Temperature of the liquid

   
   
   

   3. Atmospheric pressure

   
   
   

   4. All of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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42. When some detergent is added to water, the surface tension

1. 1. Increases

   
   
   

   2. Decreases

   
   
   

   3. Remains unaffected

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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43. 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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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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44. A liquid drop tends to assume a spherical shape because of

1. 1. Surface tension

   
   
   

   2. viscous force

   
   
   

   3. Gravitational force

   
   
   

   4. Elastic force

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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45. Distance of stars are measured in

1. 1. Galactic unit

   
   
   

   2. Seller mile

   
   
   

   3. Cosmic kilometre

   
   
   

   4. Light year

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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