|
A key of a piano is struck gently and then struck again
|
|
1
|
1069
|
November 29, 2016
|
|
A sound wave travels at a speed of 340 m/s
|
|
1
|
4623
|
November 29, 2016
|
|
If the velocity of sound in air is 330 m/s
|
|
1
|
1206
|
November 29, 2016
|
|
In a ripple tank, 14 full ripples are produced in 1 s
|
|
1
|
2292
|
November 29, 2016
|
|
Ocean waves of time period of 0.01 s have a speed of 15 ms
|
|
1
|
2780
|
November 29, 2016
|
|
What is the frequency of a wave of wavelength 34 m?
|
|
1
|
1226
|
November 29, 2016
|
|
A ship sends out ultrasound that returns from the sea bed
|
|
1
|
2893
|
November 29, 2016
|
|
Aditi clapped her hands near a cliff and heard the echo after 4 s
|
|
1
|
2154
|
November 29, 2016
|
|
Compare the frequencies of note A and C played during a musical concert
|
|
1
|
2665
|
November 29, 2016
|
|
Can SONAR be used to determine the depth of a sea?
|
|
1
|
2415
|
November 29, 2016
|
|
Which property of sound leads to the formation of echoes?
|
|
1
|
4009
|
November 29, 2016
|
|
A man fires a rifle in front of a cliff and hears the echo after 3 s
|
|
1
|
3121
|
November 29, 2016
|
|
When can we distinctly hear the echo of a sharp sound?
|
|
1
|
1167
|
November 29, 2016
|
|
Find the wavelength of sound for frequencies up to 120 kHz
|
|
1
|
1804
|
November 29, 2016
|
|
Sound wave has frequency of 3 kHz and a wavelength 45 cm
|
|
1
|
3134
|
November 29, 2016
|
|
Give the difference between pulse and wave
|
|
0
|
2609
|
November 29, 2016
|
|
The wavelength of a sound wave was measured
|
|
1
|
770
|
November 29, 2016
|
|
At what frequency, a source produces 500 sound waves per second?
|
|
0
|
1078
|
November 29, 2016
|
|
Give the basic difference between wave velocity and particle velocity
|
|
0
|
1491
|
November 29, 2016
|
|
State the conditions required to hear an echo
|
|
0
|
5641
|
November 29, 2016
|
|
Some animals get disturbed before the earthquakes. Give reason
|
|
0
|
3983
|
November 29, 2016
|
|
What makes the eardrum vibrate?
|
|
0
|
1204
|
November 29, 2016
|
|
Why do astronauts talk to each other through radio telephone?
|
|
0
|
1071
|
November 29, 2016
|
|
Why the waves produced by a motorboat
|
|
1
|
1883
|
November 29, 2016
|
|
What happen to the wavelength, velocity and frequency of sound wave
|
|
1
|
598
|
November 29, 2016
|
|
Why are the longitudinal waves also called pressure waves?
|
|
0
|
978
|
November 29, 2016
|
|
Why cannot we hear an echo in a small room?
|
|
0
|
6533
|
November 29, 2016
|
|
When the wire of a sitar is plucked
|
|
1
|
3781
|
November 28, 2016
|
|
Explain the rolling action of thunder
|
|
0
|
850
|
November 28, 2016
|