What are infrasonic sounds?

Important Questions on Sound

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 11

What are ultrasonic sounds?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 12

What is the range of frequencies of infrasound and ultrasound?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 13

Can we hear infrasonic waves? 

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 13

Can we hear ultrasonic waves?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 14

Which of these two produces ultrasonic waves: whale or tortoise?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 15

Which animal search prey at night by echo location?

MEDIUM

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 16

What is the name of the device which is used to find the depth of sea by using ultrasonic waves?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 5 - Sound>Exercise>Q 17

Name the organ of hearing in our body.