EASY
10th ICSE
IMPORTANT
Earn 100

A sonar signal (high frequency sound wave) sent down from a ship, is reflected from the ocean floor and detected by a microphone on the keel (of the ship) after transmission in 0.6 s. The speed of sound in seawater is 1500 m s-1. Calculate the depth of the ocean.

Important Questions on Sound

MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 5
A man standing in a gorge between two large cliffs gives a short sharp shout. He hears two echoes, the first after 1 second and the next after 1.5 seconds (after his shout). The speed of sound is 340 m s-1, calculate the distance of the man from each cliff and the distance between the cliffs.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 6
Radio waves of speed 3×108 m s-1 are reflected off the moon and received back on the earth, the time elapsed between the sending of the sign and receiving it back on the earth's surface is 2.5 seconds. What is the distance of the moon from earth?
MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 7
The wavelength of waves produced on the surface of water is 20 cm. If the wave velocity is 24 m s-1, calculate (i) the number of waves produced in one second and (ii) the time required is produce one wave.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 8
A radar is able to detect the reflected waves from an enemy aeroplane, after a time interval of 0.02 milliseconds. If the velocity of waves is 3×108 m s-1, calculate the distance of the plane from the radar.
MEDIUM
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 9
A man standing in front of a vertical cliff fires a gun. He hears the echo after 3 seconds. On moving closer to the cliff by 82.5 m, he fires again. This time, he hears the echo after 2.5 seconds. Calculate the distance of the cliff from the initial position of the man.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 9
A man standing in front of a vertical cliff fires a gun. He hears echo after 3 s. On moving closer to the cliff by 82.5 m, he fires again. This time he hears the echo after 2.5 s. Calculate the velocity of sound.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 10
A sound wave has a frequency 512 Hz and wavelength 65 cm. Calculate the speed of sound.
EASY
10th ICSE
IMPORTANT
Self Study in Physics>Chapter 7 - Sound>Expected Questions>Q 11
The time period of a certain vibrating body is 0.08 s. Does this body produce sound audible to the human ear?