MEDIUM
9th Chhattisgarh Board
IMPORTANT
Earn 100

On a rainy day, we hear the sound of thunder after we see the lightning, why is it so?

Important Questions on Sound

MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 1
When sound energy propagates through a medium, then from one position to another-
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 1
Sound below the frequency of 20 Hz is called-
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 1
The distance between consecutive compressions or rarefactions is called _____.
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 1
Establish a relation between the velocity of the transferred wave (v), its frequency and wavelength.
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 1
Sound waves do not travel in-
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 1
If the time period of a vibrating object is 0.05 s, the frequency of waves produced will be-
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 2
The hearing range of sound in humans is _____.
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 14 - Sound>Exercise>Q 2
The SI unit of wavelength is _____