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Topic Question Set

Q 1 :    

Paramagnetic substances

 

A. align themselves along the directions of external magnetic field.

B. attract strongly towards external magnetic field.

C. has susceptibility little more than zero.

D. move from a region of strong magnetic field to weak magnetic field.

 

Choose the most appropriate answer from the options given below:                           [2024]

  • A, C only

     

  • B, D only

     

  • A, B, C, D

     

  • A, B, C only

     

(A)    (A) align themselves along the directions of external magnetic field.

         (C) has susceptibility little more than zero.

          A, C only

 

Q 2 :    

The coercivity of a magnet is 5×103 A/m. The amount of current required to be passed in a solenoid of length 30 cm and the number of turns 150, so that the magnet gets demagnetised when inside the solenoid is _____ A.                              [2024]


(10)            Length of solenoid (λ)=30cm, No. of turns(n)=150 and H=5×103 A/m

                  We know n=NI⇒I=Nn

                  I=5×103×0.3150=10A

 

Q 3 :    

Match List-I with List-II                              [2024]

Choose the correct answer from the options given below:

  • (A)-(III), (B)-(I), (C)-(IV), (D)-(II)

     

  • (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

     

  • (A)-(I), (B)-(III), (C)-(II), (D)-(IV)

     

  • (A)-(IV), (B)-(I), (C)-(III), (D)-(II)

     

(1)