AIIMS (All India Institute of Medical Sciences) Physics: Questions 153 - 157 of 500

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Question number: 153

» Atoms and Nuclei » Nuclear Fission and Fusion

Appeared in Year: 2006

MCQ▾

Question

The operation of a nuclear reactor is said to be critical, if the multiplication factor (k) has a value –

Choices

Choice (4) Response

a.

2.1

b.

1.5

c.

2.5

d.

1

Question number: 154

» Dual Nature of Matter and Radiation » De-Broglie Relation

Appeared in Year: 2003

MCQ▾

Question

If an electron and a photon propagate in the form of waves having the same wavelength, it implies that can they have the same –

Choices

Choice (4) Response

a.

Momentum

b.

Angular momentum

c.

Velocity

d.

Energy

Question number: 155

» Properties of Solids & Liquids » Heat Transfer » Radiation

Appeared in Year: 2001

MCQ▾

Question

The color of a star is an indication of its [AIIMS, RPMT 1988, 1989]

Choices

Choice (4) Response

a.

Distance

b.

Size

c.

Temperature

d.

Weight

Question number: 156

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A vehicle, with a horn of frequency Equation is moving with a velocity of Equation in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequencyEquation . Then –

(Take velocity of sound in air 300 m/s)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 157

» Electronic Devices » Junction Transistor

Appeared in Year: 2005

MCQ▾

Question

Consider an N – P – N transistor amplifier in common-emitter configuration. The current gain of the transistor is 100. If the collector current changes by 1 mA, what will be the change in emitter current –

Choices

Choice (4) Response

a.

10 mA

b.

1.01mA

c.

1.1 mA

d.

0.01 mA

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