AIIMS Physics: Questions 402 - 406 of 500

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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 7μm 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

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 1~1021atomsm3. Given that the intrinsic concentration of electron – hole pairs is ~1019/m3 , the concentration of electrons in the specimen is –

Choices

Choice (4) Response
a.

1015/m3

b.

1017/m3

c.

104/m3

d.

102/m2

Question number: 404

» Kinematics » Projectile Motion

MCQ▾

Question

The velocity of projection of a body is given by u=3i^+4j^ . 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 ω to 2ω 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.

12

b.

12

c.

2

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

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