Physics-Sound (NSO Level 1- Science Olympiad (SOF) Class 9): Questions 1 - 6 of 59

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Passage

Direction: Study the picture carefully and answer question below

Image Shows the Boat

Image Shows the Boat

Image Shows the Boat

Question number: 1 (1 of 4 Based on Passage) Show Passage

» Physics » Sound

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MCQ▾

Question

The technique used in the picture is used to

(i) Find the velocity of a moving object

(ii) Determine the depth of the sea

(iii) Locate an underwater iceberg

(iv) Determine the distance of the sun from earth

Choices

Choice (4) Response

a.

(i) and (iv)

b.

(iii) and (iv)

c.

(ii) and (iii)

d.

(i) and (iii)

Question number: 2 (2 of 4 Based on Passage) Show Passage

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MCQ▾

Question

The technique used in the picture is also called

Choices

Choice (4) Response

a.

Supersonic

b.

Shock wave

c.

Sonic boom

d.

Echo ranging

Question number: 3 (3 of 4 Based on Passage) Show Passage

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MCQ▾

Question

In the picture, the labelled part P produces and transmits

Choices

Choice (4) Response

a.

Ultrasonic waves

b.

Shock waves

c.

Sonic boom

d.

Supersonic waves

Question number: 4 (4 of 4 Based on Passage) Show Passage

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MCQ▾

Question

In the picture, the function of the labelled part Q is to

Choices

Choice (4) Response

a.

Convert radio waves into ultrasonic waves

b.

Convert electrical signals into ultrasonic waves

c.

Convert sound waves into ultrasonic waves

d.

Convert ultrasonic waves into electrical signals

Question number: 5

» Physics » Sound

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MCQ▾

Question

A key of mechanical piano struck gently and then struck again but much harder this time. In the second case

Choices

Choice (4) Response

a.

Sound will be louder and pitch is higher

b.

Loudness and pitch will remain unaffected

c.

Sound will be louder but pitch will be lower

d.

Sound will be louder but pitch will not be different

Question number: 6

» Physics » Sound

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MCQ▾

Question

Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting

Choices

Choice (4) Response

a.

Intensity of sound

b.

Frequency of the sitar string with the frequency of other musical instrument

c.

Amplitude of sound

d.

Loudness of sound

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