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questions
List of practice Questions
Why is sound wave called a longitudinal wave?
CBSE Class IX
Science
Propagation of Sound
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
CBSE Class IX
Science
Propagation of Sound
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
CBSE Class IX
Science
Propagation of Sound
A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top?
Given, g = 10 ms
–2
and speed of sound = 340 ms
–1
.
CBSE Class IX
Science
Propagation of Sound
A sound wave travels at a speed of 339 ms
–1
. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
CBSE Class IX
Science
Propagation of Sound
What is loudness of sound? What factors does it depend on?
CBSE Class IX
Science
Propagation of Sound