BITSAT (Birla Institute of Technology & Science Admission Test) Physics: Questions 43 - 48 of 382

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Question 43

Question

MCQ▾

If the critical angle for total internal reflection from a medium to vacuum is . Then velocity of light in the medium is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 44

Question

MCQ▾

A glass rod of long is clamped at the middle. It is set into the longitudinal vibration. If the emitted sound frequency is , then velocity of sound in glass will be –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 45

Question

MCQ▾

A transistor has an it has change in emitter current of milliampere, then the change in the collector current is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 46

Question

MCQ▾

A bread gives a boy of mass an energy of . If the efficiency is then height can be climbed by him using this energy, is –

Choices

Choice (4)Response

a.

22.5 m

b.

15 m

c.

10 m

d.

5 m

Question 47

Question

MCQ▾

A source of sound is travelling with a velocity towards an observer and emits sounds of frequency . If velocity of sounds is , then apparent frequency heard by an observer is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 48

Question

MCQ▾

If the ratio of specific heat of a gas at constant pressure to that at constant volume is the change in internal energy of one mole of a gas when the volume changes from at constant pressure is –

Choices

Choice (4)Response

a.

b.

c.

d.

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