MEDIUM
9th CBSE
IMPORTANT
Earn 100

The distance between the crest and trough of a transverse wave is 15 cm, what is the velocity of the wave if its frequency is 1000 Hz ?

Important Questions on Sound

MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 13 - Sound>CHAPTER TEST>Q 23
Two astronauts cannot hear each other on the moon. Why ?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 13 - Sound>CHAPTER TEST>Q 24
Sometimes our dog begins to bark without any reason. Can you explain, Why ?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 13 - Sound>CHAPTER TEST>Q 25
In which case is the speed of sound more, the humming of a bee or the roaring of a lion ?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 13 - Sound>CHAPTER TEST>Q 26
When is the velocity of sound more, during winters or during summers ?
MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 13 - Sound>CHAPTER TEST>Q 27
Can elephants hear frequencies less than 20 Hz ?