A source of wave produces 40 crests and 40 troughs in 0.4second.Find the frequency of the wave.
400Hz
200 Hz
150Hz
100Hz
Sound from a flute and sound from a harmonica played by passing air through musical instrument, at same time and same distance from ear and traveling through same medium air, they differ in sounds due to difference in
Amplitude
Pitch
Wavelength
Speed of sound in air
The distance between a compression and the next rarefaction of a longitudinal wave is
/2
/4
/3
Which of the following quantities is transferred during wave propagation?
Speed
Particles
Mass
Energy
A bell vibrates 600 times within 3/2 seconds, its frequency and time period will be:
900 Hz, 0.0011 s
900 Hz; 1.1 s
400 Hz; 0.25s
400 Hz; 0.0025s
A swing has a time period of 1.4 seconds. The no. of oscillations made by it within 1 minute 24 seconds will be:
60
20
80
40
The amplitude of a wave is
the distance the wave moves in one second
the distance equal to one wave length
the maximum distance moved by the particles of a medium on either side of the mean position.
the distance the wave moves in one time period of the wave
A baby cries with a frequency 712 Hz, if the speed of sound in air is 356m/s, the wavelength of sound is:
.05m
5 m
0.005 m
0.5 m
A siren has 16 holes and is making 960 revolutions per minute. The frequency of the sound produced by the siren is:
256 Hz
128 Hz
960 Hz
512 Hz
Which of the following is a mechanical wave?
Light
Sound
X-rays
Radio waves
