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Which of the following atoms has permane...

Which of the following atoms has permanent electric dipole moment zero ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A
`vecmu_(l)=-(e/(2m))veclrArrvecmu_(l)andvecl` are in opposite directions (where `vecl` is in the direction of `vecrxxvecp`)
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KUMAR PRAKASHAN-MOVING CHARGES AND MAGNETISM-SECTION D (MULTIPLE CHOICE QUESTIONS)
  1. When electron revolves around nucleus in a circular orbit, its orbital...

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  2. Value of gyromagnetic ratio for an orbital electron is

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  3. Which of the following atoms has permanent electric dipole moment zero...

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  4. A current carrying loop is placed in a uniform magnetic field. The tor...

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  5. A conducting wire of 2m length is used to form a circular loop. If it ...

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  6. A rectrangular coil 20cmxx20cm has 100 turns and carries a current of ...

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  7. A current carring small loop behaves like a small magnet. If A be its ...

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  8. Dipole moment of coil is 2hati+3hatj+5hatk. If this coil is placed in ...

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  9. A circular coil of radius 4 cm and of 20 turns carries a current of 3 ...

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  10. An electron moves with a constant speed v along a circle of radius r. ...

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  11. A circular coil having N turns is made from a wire L meter long. If a ...

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  12. can measure small current and small voltage both.

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  13. has maximum resistance.

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  14. Why small soft iron cylinder is placed at the axis of the coil in galv...

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  15. What should be the resistance of an ideal ammeter ?

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  16. When series resistance is increased, range of voltmeter

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  17. When shunt connected to galvanometer has the value equal to resistance...

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  18. Which of following statements is wrong?

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  19. There are three voltmeters of same range with resistance 10,000Omega,8...

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  20. In order to increase the sensitivity of a moving coil galvanometer, s...

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