AIIMS (All India Institute of Medical Sciences) Physics: Questions 403 - 408 of 500

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Question number: 403

» Electronic Devices » Semiconductor Diode

Appeared in Year: 2004

MCQ▾

Question

A Ge specimen is doped with Al. The concentration of acceptor atoms Given that the intrinsic concentration of electron – hole pairs is, the concentration of electrons in the specimen is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 404

» Kinematics » Projectile Motion

MCQ▾

Question

The velocity of projection of a body is given by . The ratio of horizontal range to maximum height is

Choices

Choice (4) Response

a.

3

b.

2

c.

6

d.

4

Question number: 405

» Rotational Motion » Radius of Gyration

MCQ▾

Question

The angular velocity of a body changes from to without applying torque but by changing moment of inertia. The ratio of initial radius of gyration to the final radius of gyration is –

Choices

Choice (4) Response

a.

b.

c.

d.

2

Question number: 406

» Gravitation » Gravitational Acceleration

MCQ▾

Question

It the radius of the earth is reduced by 2 %, keeping the mass unchanged, what will be the change in acceleration due to gravity at the surface of the earth?

Choices

Choice (4) Response

a.

6

b.

4

c.

2

d.

8

Question number: 407

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

The reactance of an inductance of 0.07 H is . Than the frequency of a. c is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 408

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A gun of weight of 15 kg fires a shot of 0.5 g with a velocity. Velocity of recoil gun is: -

Choices

Choice (4) Response

a.

b.

c.

d.

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