AIIMS (All India Institute of Medical Sciences) Physics: Questions 65 - 68 of 500

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Question number: 65

» Electrostatics » Electric Field

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Appeared in Year: 2005

MCQ▾

Question

Two infinitely long parallel conducting plates having surface charge densities +σ and -σ respectively, are separated by a small distance. The medium between the plates is vacuum. If ε0 is the dielectric permittivity of vacuum, than the electric field in the region between the plates is – [AIIMS]

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 66

» Magnetic Effects of Current and Magnetism » Magnetic Moment

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Appeared in Year: 2005

MCQ▾

Question

The magnetic moment (µ) of a revolving electron around the nucleus varies with principal quantum number n as – [AIIMS]

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 67

» Electromagnetic Induction & Alternating Currents » Lenz's Law

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Appeared in Year: 1982

MCQ▾

Question

As shown in the figure, a copper coil A and a wire are placed on the surface of the paper. A current of 1A flows in the wire in the directions as shown in the figure. If the magnitude of the current is raised to 2 A, the direction of the induced current in the coil [AIIMS, RPMT-88]

A copper coil A and a wire

A Copper Coil a and a Wire

Figure shows a copper coil A and a wire are placed on the surface of the paper.

Choices

Choice (4)Response

a.

Clock wise

b.

No current will induced

c.

Anti clock wise

d.

All of the above

Question number: 68

» Kinematics » Uniformly Accelerated Motion

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Appeared in Year: 2005

MCQ▾

Question

A person is standing in an elevator. In which situation he finds his weight less –

[AIIMS]

Choices

Choice (4)Response

a.

when the elevator moves downward with uniform velocity

b.

when the elevator moves upward with constant acceleration

c.

when the elevator moves upward with uniform velocity

d.

when the elevator moves downward with constant acceleration

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