Unwanted sounds are called

Important Questions on Sound

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 11

Vibrations in a body produce

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 12

The loudness of sound is determined by its

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 13

Which of the following are used to study the growth of foetus inside the mother's womb?

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 14

Loudness of sound is measured in units of

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 15

The ultrasound waves can penetrate into matter to a large extent because they have

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 16

$1 \mathrm{Hz}$ is equal to

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 17

Frequency is expressed in

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Practice>Q 18

Pitch of sound is determined by its