AIIMS (All India Institute of Medical Sciences) Physics: Questions 416 - 421 of 500

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Question number: 416

» Magnetic Effects of Current and Magnetism » Cyclotron

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MCQ▾

Question

The cyclotron frequency of an electron gyrating in a magnetic field of 2 T is approximately –

Choices

Choice (4)Response

a.

5.6 GHz

b.

56 GHz

c.

56 Hz

d.

560 MHz

Question number: 417

» Electrostatics » Capacitors

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MCQ▾

Question

Minimum number of and 200 V capacitors used to make a combination of and 1000 V are:

Choices

Choice (4)Response

a.

12

b.

16

c.

7

d.

10

Question number: 418

» Communication System » Sky and Space Wave Propagation

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MCQ▾

Question

In short wave communication waves of which of the following frequencies will be reflected back by the ionosphere layer having electron density 108 per m3?

Choices

Choice (4)Response

a.

90 KHz

b.

9 KHz

c.

45 KHz

d.

4.5 KHz

Question number: 419

» Kinematics » Motion in a Plane

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MCQ▾

Question

A particle moves in xy – plane such that its position is given by . Velocity and acceleration at time are respectively –

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 420

» Electrostatics » Capacitors

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MCQ▾

Question

125 drops of liquid are combined to form a bigger single drop. The capacitance of single small drop and single big drop will be in ratio –

Choices

Choice (4)Response

a.

5: 1

b.

1: 25

c.

25: 1

d.

1: 5

Question number: 421

» Oscillations and Waves » Speed of a Wave

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MCQ▾

Question

The velocities of sound at the same pressure in two monatomic gases of densities and are and respectively. If , then the value of

Choices

Choice (4)Response

a.

25

b.

c.

5

d.

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