Sound [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 7 of 24

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Question 1

Question MCQ▾

Unit of loudness is:

Choices

Choice (4)Response

a.

dB

b.

Hz

c.

Question does not provide sufficient data or is vague

d.

None of the above

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Question 2

Question MCQ▾

Larynx is called as:

Choices

Choice (4)Response

a.

Body՚s voice box

b.

Sound producing organ in human

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Edit

Question 3

Question MCQ▾

Why one cannot listen the sounds on moon?

Choices

Choice (4)Response

a.

There are ultrasonic waves

b.

There are infrasonic waves

c.

There is no medium on moon

d.

Maximum vibration of an object

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Question 4

Question MCQ▾

Number of oscillations per second is called as:

Choices

Choice (4)Response

a.

Loudness

b.

Frequency

c.

Oscillation

d.

Time period

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Question 5

Question MCQ▾

Sound is defined as:

Choices

Choice (4)Response

a.

Form of energy

b.

Sound can be created or transmitted only in medium

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Edit

Question 6

Question MCQ▾

Ear is divided into how many parts?

Choices

Choice (4)Response

a.

Three

b.

Five

c.

Two

d.

Four

Edit

Question 7

Question MCQ▾

Sound of low frequency is called as:

Choices

Choice (4)Response

a.

Bass

b.

Amplitude

c.

Vibration

d.

Shrill

Edit