Advertisements
Advertisements
प्रश्न
Figure below shows the distance-displacement graph of two waves A and B. Compare
- the amplitude,
- the wavelength of the two waves.
उत्तर
Amplitude is the maximum displacement from the mean position.
For A maximum displacement = 10 cm and
for B the maximum displacement = 5 cm.
(i) The ratio of maximum amplitude is `"A"_1/"A"_2 = 10/5 = 2 : 1`
Wavelength of A = 8 cm
Wavelength of B = 16 cm
(ii) The ratio of wavelength is `lambda_1/lambda_2 = 8/16 = 1 : 2`
APPEARS IN
संबंधित प्रश्न
Calculate the minimum distance in air required between the source of sound and the obstacle to hear an echo. Take speed of sound in air = 350 m s-1
A RADAR sends a signal with a speed of 3 x 108 m s-1 to an aeroplane at a distance of 300 km from it. After how much time is the signal received back after reflection from the aeroplane?
A ship on the surface of water sends a signal and receives it back from a submarine inside water after 4 s. Calculate the distance of the submarine from the ship. (The speed of sound in water is 1450 ms-1)
A person standing between the two vertical cliffs produces a sound. Two successive echoes are heard at 4 s and 6 s. Calculate the distance between the cliffs.
(Speed of sound in air = 320 ms-1)
What is the range of audibility?
The smoke from the gun barrel is seen 2 seconds before the explosion is heard. If the speed of sound in air is 340 ms−1, calculate the distance of the observer from the gun. State the approximation used.
An observer standing in front of a vertical wall claps 10 times one second. He adjusts his distance from the wall in such a way that the second of his clapping coincides with the echo. This happens when bis distance from the wall is 17.5m. What is the velocity of sound heard by him?
A ship which is stationary at a distance of 680 m from the shore, sends a signal to the coast. Its echo is heard in 4s. Find the velocity of sound.
An observer stands at a distance of 850 m from a cliff and fires a gun. After what time gap will he hear the echo? If sound travels at a speed of 350 m/sec., in air.
A man standing in front of a vertical cliff fires a gun. He hears an echo after 35s. On moving close to the cliff by 82.5 m he fires again. This time he hears the echo after 2.55s. Calculate the speed of sound, distance, and the initial position of man from the cliff.
