Advertisements
Advertisements
प्रश्न
A person is standing at the seashore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore fires a gun. The person on the shore hears two sounds, 2 seconds and 3 seconds after seeing the smoke of the fired gun. If the speed of sound in the air is 320 ms-1 then calculate:
1) the distance between the observer on the ship and the person on the shore.
2) the distance between the cliff and the observer on the ship.
Advertisements
उत्तर
1) `d_1 = 320 xx 1.5 = 320 xx 1.5 = 640 m`
2) `d_2 = 320/2 = 160 m`
APPEARS IN
संबंधित प्रश्न
If the amplitude of vibration is large, sound is feeble.
A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?
Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.
The ratio of amplitude of two waves is 3:4. What is the ratio of their loudness?
The safe limit of loudness of audible sound is
Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.
How do they differ in
(a) loudness,
(b) pitch and
(c) quality
State three factors on which loundess of sound heard by a listener depends.
How do you account for the fact that two strings can be used to give notes of the same pitch and loudness but of different quality?
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
