GATE (Graduate Aptitude Test in Engineering) Physics: Questions 554 - 558 of 659

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Passage

A sphere of radius carries a polarization , where is a constant and is measured from the centre of the sphere.

Question 554 (1 of 2 Based on Passage)

Appeared in Year: 2007

Question

MCQ▾

The electric field at a point outside the sphere is given by –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 555 (2 of 2 Based on Passage)

Appeared in Year: 2007

Question

MCQ▾

The bound surface and volume charge densities are given, respectively, by –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 556

Appeared in Year: 2006

Question

MCQ▾

Each of the two isolated vessels, and of fixed volumes, contains molecules of a perfect monatomic gas at a pressure . The temperatures of and are and , respectively. The two vessels are brought into thermal contact. At equilibrium, the change in entropy is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 557

Appeared in Year: 2006

Question

MCQ▾

An atom with net magnetic moment and net angular momentum is kept in a uniform magnetic induction . The magnetic moment is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 558

Appeared in Year: 2006

Question

MCQ▾

A long cylindrical kept along axis carries a current density , where is a constant and is the radial distance from the axis of the cylinder. The magnetic induction inside the conductor at a distance from the axis of the cylinder is –

Choices

Choice (4)Response

a.

b.

c.

d.

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