Electromagnetic Theory [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 23 - 28 of 88

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Question 23

Appeared in Year: 2012

Question

MCQ▾

A plane electromagnetic wave traveling in free space is incident normally on a glass plate of refractive index . If there is no absorption by the glass, its reflectivity is –

Choices

Choice (4)Response

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c.

d.

Question 24

Electromagnetic Theory

Appeared in Year: 2012

Question

MCQ▾

A plane polarized electromagnetic wave in free space at time is given by . The magnetic field is given by –

Choices

Choice (4)Response

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b.

c.

d.

Passage

In a hydrogen atom, consider that the electromagnetic charge is uniformly distributed in a spherical volume of radius around the proton. The atom is placed in a uniform electric field . Assume that the spherical distribution of the negative charge remains undistorted under the electric field.

Question 25 (1 of 2 Based on Passage)

Appeared in Year: 2012

Question

MCQ▾

In the equilibrium condition, the separation between the positive and negative charge centers is –

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Choice (4)Response

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d.

Question 26 (2 of 2 Based on Passage)

Electromagnetic Theory

Appeared in Year: 2015

Question

MCQ▾

The polarizability of the hydrogen atom in unit of is –

Choices

Choice (4)Response

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b.

c.

d.

Question 27

Appeared in Year: 2011

Question

MCQ▾

A magnetic dipole of dipole moment is placed in a non – uniform magnetic field . If the position vector of the dipole is , the torque acting on the dipole about the origin is –

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Choice (4)Response

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c.

d.

Question 28

Appeared in Year: 2011

Question

MCQ▾

A spherical conductor of radius is placed in a uniform electric field . The potential at a point for , is given by ; where is the distance of from the centre of the sphere and is the angle makes with the axis. The charge density on the sphere at is

A Spherical Conductor of Radius A

Choices

Choice (4)Response

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c.

d.

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