MEDIUM
9th CBSE
IMPORTANT
Earn 100

Why does the amplitude of oscillation get reduced over a period of time? Explain with diagram.

Important Questions on Sound

MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 17
What is the intensity of sound wave? Give its relation with amplitude.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 18

A bat can hear sound at frequencies up to 130 kHz. 

What is the wavelength of the sound? 
Speed of sound is 344 m s-1.

MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 19
Explain, how sonic booms are produced?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 20
What is the difference between supersonic and ultrasonic?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 21
Given below is some example of wave motion. State, if the wave motion is transverse, longitudinal or a combination of both?
Motion of a kink in long coil spring produced by displacing one end of the sting sideways.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 21
Given below is some example of wave motion. State, if the wave motion is transverse, longitudinal or a combination of both?
Wave produced in a cylinder consisting a liquid by moving its piston back and forth.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 21
Given below is some example of wave motion. State, if the wave motion is transverse, longitudinal or a combination of both?
Wave produced by a motorboat sailing in water.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 21
Given below is some example of wave motion. State, if the wave motion is transverse, longitudinal or a combination of both?
Light waves travelling from Sun to Earth.