A transverse wave is represented by the equation
The time of reverberation of a room A is one second. What will be the time (in second) of reverberation of a room, having a the dimensions double of those of room A ?
The equation of a wave is given by
where x and y are in metre and t in second, then velocity of wave is
0.1 m/s
10 m/s
100 m/s
1000 m/s
The driver of a car travelling with speed 30 ms-1 towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 ms-1, the frequency of reflected sound as heard by driver is
550 Hz
555.5 Hz
720 Hz
500 Hz
The wave described by
where x and y are in metre and t in second, is a wave travelling along the
A standing wave having 3 nodes and 2 antinode is formed between two atoms having a distance 1.21 between them, The wavelength of the standing wave is
The phase difference between two waves represented by
where x is expressed in metre and t is expressed in second, is approximately
1.07 rad
2.07 rad
0,5 rad
1.5 rad
9 : 4
2 : 3
3 : 2
4 : 9
A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of a sound in a tissue is 1.7 km/s. The speed of sound in a tissue is 1.7 km/s. The wavelength of sound in tissue is close to
4 x 10-4 m
8 x10-4 m
4 x10-3 m
8 x10-3 m
An observer moves towards a stationary source of sound with a speed of the speed of sound . The wavelength and frequency of the source emitted are respectively. The apparent frequency and wavelength recorded by the observer are respectively
