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

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Question 1

Question 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.

Ꭺ is false but Ꭱ is true

b.

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

c.

Ꭺ is true but Ꭱ is false

d.

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

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Question 2

Question MCQ▾

SONAR is based on the principle of

Choices

Choice (4)Response

a.

vibration

b.

echo

c.

resonance

d.

All of the above

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Question 3

Question 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.

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

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

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Question 4

Question MCQ▾

Doppler effect is depend on

Choices

Choice (4)Response

a.

velocity of listener

b.

velocity of source

c.

distance between source and listener

d.

All of the above

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Question 5

Question MCQ▾

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.

I and II

b.

Neither I nor II

c.

Only II

d.

Only I

Edit