Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 63

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The magnetic field lines due to a bar magnet are correctly shown in,

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Important Questions on Magnetism

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 64

A particle of charge

q

and mass

m

moves in a circular orbit of radius

r

with angular speed

ω .

The ratio of the magnitude of its magnetic moment to that of its angular momentum depends on

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 65

Which of the following represents the correct relationship between total magnetic moment

(M)

, orbital magnetic moment

(M_{0})

and spin magnetic moment

(M_{s})

?

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 67

The electron in the hydrogen atom is moving with a speed of

2.3 \times 10^{6} m s^{- 1}

in an orbit of radius

0.53 A .

Calculate the magnetic moment of the revolving electron.

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 68

A charge

q

is spread uniformly over an isolated ring of radius

R

. The ring is rotated about its natural axis with an angular velocity

ω

. The magnetic dipole moment of the ring is

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 69

If an electron of charge

(- e)

and mass

m_{e}

revolves around the nucleus of an atom having magnetic moment

M_{c},

then angular momentum of electron is

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 70

If

M_{0}

and

L_{0}

denote the orbital angular moment and the angular momentum of the electron due to its orbital motion, then the gyromagnetic ratio is given by

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 71

The S.I. unit of gyromagnetic ratio is

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Physics Crash Course MHT-CET>Chapter 17 - Magnetism>Exercise 1>Q 72

The electron in the hydrogen atom is moving with a speed of

2.5 \times 10^{6} m s^{- 1}

in an orbit of radius

0.5 A

. Magnetic moment of the revolving electron is