Physics-Sound (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 5 of 6

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Question number: 1

» Physics » Sound

Assertion-Reason▾

Assertion (Ꭺ)

The velocity of sound in air increases due to the presence of moisture in it.

Reason (Ꭱ)

The presence of moisture in air lowers the density of air.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 2

» Physics » Sound

MCQ▾

Question

SONAR is based on the principle of

Choices

Choice (4) Response

a.

vibration

b.

echo

c.

resonance

d.

All of the above

Question number: 3

» Physics » Sound

Assertion-Reason▾

Assertion (Ꭺ)

Sound can reach from one place to another due to air.

Reason (Ꭱ)

mechanical wave requires a medium for its propagation

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 4

» Physics » Sound

MCQ▾

Question

Doppler effect is depend on

Choices

Choice (4) Response

a.

velocity of listener

b.

distance between source and listener

c.

velocity of source

d.

All of the above

Question number: 5

» Physics » Sound

MCQ▾

Question

Consider the following statements

I. A flute of smaller length produces waves of lower frequency.

II. Sound travels in rocks in the form of longitudinal elastic waves only.

Which of the statements given above is/are correct?

Choices

Choice (4) Response

a.

Only II

b.

Neither I nor II

c.

I and II

d.

Only I

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