NSO Level 1- Science Olympiad (SOF) Class 8: Questions 868 - 872 of 1175

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Question 868

Question

MCQ▾

The relation between the loudness and amplitude of a sound is

Choices

Choice (4)Response

a.

Loudness is decreased by the twice of amplitude

b.

Loudness is increased by twice the amplitude

c.

Loudness is decreased by the square of amplitude

d.

Loudness is increased by the square of amplitude

Question 869

Question

MCQ▾

Which of the following is not a use of sound?

Choices

Choice (4)Response

a.

Take photos of internal organs

b.

Treatment and entertainment

c.

Communication in animals

d.

Detect problems in internal organs in medical science

Question 870

Question

MCQ▾

Presence of excessive or unwanted sound in the atmosphere causes

Choices

Choice (4)Response

a.

Air pollution

b.

Sound pollution

c.

Environment pollution

d.

Water pollution

Question 871

Question

MCQ▾

Here are the different steps of hearing by human. Arrange them in order

1) Outer ear collects the sound and passes to the ear canal

2) The sound strikes the eardrum and vibrates it

3) The vibrations are amplified and transmitted to the middle ear

4) Cochlea coverts the sound waves to electrical signals

Choices

Choice (4)Response

a.

1,4, 3,2

b.

1,3, 2,4

c.

1,3, 4,2

d.

1,2, 3,4

Question 872

Question

MCQ▾

Find out the incorrect statements about sound

1) Sound is propagated in the form of waves

2) Sound needs a medium to propagate

3) Sound propagates through vacuum

Choices

Choice (4)Response

a.

1 and 3

b.

3

c.

1 and 2

d.

All of the above

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