NSO Level 1- Science Olympiad (SOF) Class 8: Questions 918 - 924 of 1076

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Question number: 918

» Sound

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MCQ▾

Question

Which of the following is not a musical instrument that produces sound by striking?

Choices

Choice (4)Response

a.

Khadam

b.

Drum

c.

Manjira

d.

Flute

Question number: 919

» Sound

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MCQ▾

Question

A whistle produces a high pitch sound than a drum. The reason is

Choices

Choice (4)Response

a.

The sound of a whistle has higher frequency

b.

Pitch of a sound depends upon the frequency

c.

Pitch of a sound depends upon the amplitude

d.

Both a. and b. are correct

Question number: 920

» Sound

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MCQ▾

Question

Travelling of sound from one place to another is called

Choices

Choice (4)Response

a.

Propagation of sound

b.

Medium of sound

c.

Waves of sound

d.

Amplitude of sound

Question number: 921

» Sound

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MCQ▾

Question

The role of amplifier in a music system is to

Choices

Choice (4)Response

a.

Increase the loudness of the sound

b.

Improve the quality of sound

c.

Decrease the loudness of the sound

d.

None of the above

Question number: 922

» Sound

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MCQ▾

Question

The to and fro motion of an object is called

Choices

Choice (4)Response

a.

Oscillation

b.

Circular motion

c.

Rectilinear motion

d.

All of the above

Question number: 923

» Sound

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MCQ▾

Question

The sound producing organ in our body is known as

Choices

Choice (4)Response

a.

Cochlea

b.

Pharynx

c.

Ear drum

d.

Larynx

Question number: 924

» Sound

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MCQ▾

Question

Radar has sent a sound wave to locate a submarine from a ship. The echo is heard 5 seconds after the sound was sent. How deep is the submarine from the surface of the sea? (Hint: velocity of sound is 340m/s).

Choices

Choice (4)Response

a.

17km

b.

170m

c.

170km

d.

1.7km

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