AIIMS (All India Institute of Medical Sciences) Physics: Questions 398 - 402 of 500

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Question number: 398

» Electrostatics » Capacitors

MCQ▾

Question

What is the area of the plate of a 2F parallel plate capacitor, if the separation between the plates is 3 mm?

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 399

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

The rate of flow of a liquid through a capillary tube of radius is V when the pressure difference across the two ends of the capillary is P. If pressure is increased by 6P and radius is reduced to then the rate of flow becomes,

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 400

» Magnetic Effects of Current and Magnetism » Cyclotron

MCQ▾

Question

The cyclotron frequency of an electron gyrating in a magnetic field of 5 T is approximately –

Choices

Choice (4) Response

a.

280 GHz

b.

140 GHz

c.

28 Hz

d.

160 MHz

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Question number: 401

» Electronic Devices » Junction Transistor

MCQ▾

Question

Consider an N – P – N transistor amplifier in common-emitter configuration. The current gain of the transistor is 90. If the collector current changes by 2 mA, what will be the change in emitter current –

Choices

Choice (4) Response

a.

1.01mA

b.

2.2 mA

c.

2.02 mA

d.

0.2 mA

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Question number: 402

» Wave Optics » Young's Double Slit Experiment

MCQ▾

Question

A double slit experiment is performed with light of wavelength 700 nm. A thin film of thickness and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will –

Choices

Choice (4) Response

a.

Shift upward by five fringes

b.

Shift downward by 10 fringes

c.

Remain upshifted

d.

Shift upward by seven fringes

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