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प्रश्न
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उत्तर
Bats make a series of twittering sound, so high pitched that human ear can not hear. These sound waves strike against the obstacles less in their path of flight and send back echoes to the bat’s ear. The echoes tell the bats, how they must turn in the air to avoid colliding with the obstacles or with one another.
संबंधित प्रश्न
Fill in the blank.
The pitch of a sound depends on its ________.
Select the correct alternative :
We can distinguish a shrill sound from a flat sound by its
How is sound produced ?
How do we produce sound ?
A musician recognizes the musical instrument by hearing the sound produced by it, even without seeing the instrument. Which characteristic of sound makes this possible ?
Name the two types of waves which can be generates in a long flexible spring (or slinky).
What is sound? What type of waves are sound wave in air?
Is pitch same as frequency?
Explain meaning of the terms compression and rarefaction in relation to a longitudinal wave.
What do you mean by the audible range of frequency?
How is the sound produced?
Is sound a form of energy?
What is the value of sound of room temperature?
A person hearing at one end of a long metal bar hears two distinct sounds when the other end is struck with a stone. Explain, giving scientific reasons
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
A sound wave travels 2000 m in 8 s. What is the velocity of the sound?
How does the sound produced by a vibrating object in a medium reach your ears?
Note is a sound
Why is a sound wave called a longitudinal wave?
