Advertisements
Advertisements
प्रश्न
What is sound? How is it produced?
उत्तर
Sound is a form of energy that produces the sensation of hearing in our ears. Sound is produced by a vibrating body.
APPEARS IN
संबंधित प्रश्न
Why is sound wave called a longitudinal wave?
What are infrasonics? Can you hear them?
How does the velocity of a wave vary with temperature?
The sound of an explosion on the surface of a lake is heard by a boat man 100 m away and by a diver 100 m below the point of explosion.
(i) Who would hear the sound first: boatman or diver?
(ii) Give a reason for your answer in part (i).
(iii) If sound takes time t to reach the boatman, how much time approximately does it take to reach the diver?
The speed of sound in air at 0°C is nearly :
An observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.
If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in _____.
Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?
Why is a sound wave called a longitudinal wave?
Assertion: The sound of thunder is heard a little later than the flash of light.
Reason: The speed of sound is much less than the speed of light.
