HARD
9th ICSE
IMPORTANT
Earn 100

Is water waves a mechanical wave?

Important Questions on Sound

MEDIUM
9th ICSE
IMPORTANT
Is wave in a string a transverse wave?
HARD
9th ICSE
IMPORTANT
Is a sound wave generated as a transverse wave?
EASY
9th ICSE
IMPORTANT
What is the SI unit of wavelength? 
HARD
9th ICSE
IMPORTANT

What is the relationship between velocity, frequency and wavelength of a wave?

HARD
9th ICSE
IMPORTANT
A wave vibrates up and down 5 times in 0.5 s and it covers a distance of 7 m during this interval. Calculate the frequency of the wave. 
MEDIUM
9th ICSE
IMPORTANT
A wave vibrates up and down 5 times in 0.5 s and it covers a distance of 7 m during this interval. Calculate the velocity of the wave.
HARD
9th ICSE
IMPORTANT
With the increase in the humidity, does the speed of sound increases or decreases?
MEDIUM
9th ICSE
IMPORTANT

Why is lightning seen before thunder?