AIIMS (All India Institute of Medical Sciences) Physics: Questions 351 - 355 of 500

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 500 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

Question number: 351

» Communication System » Sky and Space Wave Propagation

MCQ▾

Question

In short wave communication waves of which of the following frequencies will be reflected back by the ionosphere layer having electron density 1018 per m3?

Choices

Choice (4) Response

a.

12 GHz

b.

9 GHz

c.

15 GHz

d.

3 GHz

Question number: 352

» Kinetic Theory of Gases » Kinetic Theory of Gases

MCQ▾

Question

For an ideal gas at 330 K temperature, the average translation energy of molecules is , and the rms speed if molecules is . Find the corresponding value at temperature ,

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 353

» Experimental Skills » Speed of Sound in Air

MCQ▾

Question

The velocity of sound in air at is . At what temperature its velocity will be half?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 354

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A vehicle, with a horn of frequency is moving with a velocity of in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency. Then – (Take velocity of sound in air 300 m/s)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 355

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A siren emitting sound of frequency 750 Hz is going away form a static listener with a speed of. The frequency of sound to be heard directly from the siren is –

Choices

Choice (4) Response

a.

530 Hz

b.

669 Hz

c.

489 Hz

d.

344 Hz

f Page