Advertisements
Advertisements
Question
Velocity of sound in the atmosphere of a planet is 500 ms–1. The minimum distance between the sources of sound and the obstacle to hear the echo should be
Options
17 m
20 m
25 m
50 m
Advertisements
Solution
25m
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
Sound can travel in a vacuum.
Guess which sound has a higher pitch:
Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be :
Fill in the blank and explain.
The velocity of sound in steel is ______ than the velocity of sound in water.
Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her?
(The velocity of sound in air is 340 m/s.)
A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is _____.
An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 ms–1?
When temperature increases the speed of sound ______.
Numerical problems:
A Sound wave travels at a speed of 344 ms-1. If the wavelength is 1.5 cm, what is the frequency of the Wave? Will it be audible?
