AIIMS (All India Institute of Medical Sciences) Physics: Questions 351 - 354 of 500

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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 Equation , and the rms speed if molecules is Equation . Find the corresponding value at temperature Equation ,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 353

» Experimental Skills » Speed of Sound in Air

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 354

» 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

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