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A bar magnet of magnetic moment M is ben...

A bar magnet of magnetic moment M is bent in the form of quadrant of circular arc . The new magnetic moment is

A

`(2M)/(pi)`

B

`(2 sqrt2 M)/(pi)`

C

`(sqrt2M)/(pi)`

D

M

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The correct Answer is:
B
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AAKASH INSTITUTE-MAGNETISM AND MATTER -Assignment Section - B Objective Type Questions (One option is correct)
  1. The true value of angle of dip at a place is 60^(@) . The apparent ang...

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  2. Two identical bar magnets of magnetic moment M each are inclined to 60...

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  3. A bar magnet of magnetic moment M is bent in the form of quadrant of c...

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  4. A thin rectangular magnet suspended freely has a period of oscillation...

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  5. A magnetic needle lying parallel to a magnetic field requires W units ...

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  6. The pole strength of a bar magnet is 48A-m and the distance between it...

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  7. Magnetic intensity for an axial point due to a short bar magnet of mag...

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  8. A small rod of bismuth is suspended freely between the poles of a stro...

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  9. A magnetic needle is kept in a non uniform magnetic field . It experie...

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  10. The magnet of vibration magnetometer is heated so as to reduce its mag...

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  11. Two bar-magnets having their moment of inertia in the ratio 2: 3 oscil...

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  12. A small magnetic needle performs 10 oscillations/minute in the earth's...

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  13. Two identical short bar magnets, each having magnetic moment M, are pl...

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  14. A steel bar of cross-sectional area A and length l is magnetised to de...

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  15. In a vertical plane p(1) making angle 30^(@) with magnetic meridian , ...

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  16. A bar magnet oscillates in a region of uniform magnetic field with ti...

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  17. The susceptibility of a substance in vacuum is

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  18. Point out the best representation of relation between magnetic suscep...

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  19. The period of oscillation of compass needle is 8 s at a place where di...

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  20. Which of the following equations indicates that magnetic monopole does...

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