AIIMS (All India Institute of Medical Sciences) Physics: Questions 299 - 304 of 500

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Question number: 299

» Experimental Skills » Speed of Sound in Air

MCQ▾

Question

The speed of sound in a gas at S. T. P. is and the density of the gas is . Find the number of degrees of freedom of a molecule of the gas.

Choices

Choice (4) Response

a.

6

b.

5

c.

3

d.

4

Question number: 300

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

Two bodies with kinetic energies in the ratio of are moving with equal linear momentum. The ratio of their masses is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 301

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

A radioactive substance decays to of its initial activity in 20 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4) Response

a.

2

b.

6

c.

8

d.

12

Question number: 302

» Communication System » Sky and Space Wave Propagation

MCQ▾

Question

For sky wave propagation of a 18 MHz signal, what should be the minimum electron density in ionosphere –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 303

» Work, Energy and Power » Work-Energy Theorem

MCQ▾

Question

A bullet loses of its velocity when it passes through a plank. Find the maximum number of planks through which it can pass.

Choices

Choice (4) Response

a.

10

b.

5

c.

3

d.

9

Question number: 304

» Kinematics » Relative Velocity

MCQ▾

Question

A boy standing on a long rail road car throws a ball up (straight) with a velocity. The car is moving on the horizontal road with acceleration 3, How far behind the boy will the ball fall?

Choices

Choice (4) Response

a.

12m

b.

8m

c.

d.

48 m

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