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संबंधित प्रश्न
Name the two types of waves which can be generates in a long flexible spring (or slinky).
A cannon is fired at A (see diagram). An observer at B hears two sounds. The first sound is heard after 1 second and the second 3s after the observer sees the flash. (Velocity of sound = 340 ms−1)
(i) Why does the observer see the flash before he hears the sound?
(ii) Calculate the distance x between the observer and the wall.
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
The sound of which of the following frequency is audible to us?
2 Hz, 1000 Hz, 200 kHz, 8 MHz
Name the Sound of the Frequency Given Below:
200 Hz
Sound is a ______ wave and needs a material medium to travel.
Longitudinal waves are produced in solids liquids and also in gases.
Write any two uses of ultrasonic sound.
Why is a sound wave called a longitudinal wave?
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
