51. In the case of a bar magnet, the line of magnetic induction

1. 1. Start from the north pole and end at the south pole

   
   
   

   2. Run continuously through the bar and outside

   
   
   

   3. Emerge in circular paths from the middle of the bar

   
   
   

   4. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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52. Consider the following statements
    At the present level of technology available in India, Solar energy can be conveniently used to
    1. Supply hot water to residential buildings
    2. Supply water for minor irrigation projects
    3. Provide street lighting
    4. Electrify a cluster of villages and small towns

1. 1. 1, 2, 3 and 4 are correct

   
   
   

   2. 2 and 4 are correct

   
   
   

   3. 1 and 3 are correct

   
   
   

   4. 1, 2 and 3 are correct

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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53. One wb / m² is equal to

1. 1. 10⁴ gauss

   
   
   

   2. 10² gauss

   
   
   

   3. 10^-2 gauss

   
   
   

   4. 10^-4 gauss

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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54. A moving charge produces

1. 1. An electric field only

   
   
   

   2. A magnetic field only

   
   
   

   3. Both electric and magnetic fields

   
   
   

   4. Neither an electric nor a magnetic field

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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55. The terminal potential difference of a battery exceeds its emf. When it is connected

1. 1. In parallel with a battery of higher emf.

   
   
   

   2. In series with a battery of higher emf.

   
   
   

   3. In series with a battery of lower emf.

   
   
   

   4. In parallel with battery of lower emf

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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