MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is the relationship between, wave velocity, frequency and wavelength for a periodic wave.

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 2
A source of wave produces 40 crests and 40 troughs in 0.4 second. Find the frequency of the wave.
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 3
A human heart on average is found to beat 75 times a minute. Calculate its frequency.
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 4
On what factors the speed of sound in a medium depends?
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 5
In which of the following Solids, Liquids and Gases, the speed of sound is the highest and lowest?
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 6
You can hear easily the sound of an approaching train by putting your ears on the track well before you could hear its sound in the air. Give reason.
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 7
Though lightning and thunder are produced together, the flash of lightning is seen much before the thunder is heard. Give reason.
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 8
What are the characteristics of sound?
EASY
9th CBSE
IMPORTANT
Physics>Chapter 6 - Sound>CLASS ASSIGNMENT 3>Q 9
What is meant by loudness of sound?