From a wave equation
the frequency of the wave is
5 Hz
15 Hz
20 Hz
25 Hz
Two waves are said to be coherent, if they have
same phase but different amplitude
same frequency but different amplitude
same frequency, phase and amplitude
Equation of progressive wave is given by
Then which of the following is correct?
v = 5 cm
λ = 18 cm
a = 0.04 cm
ƒ = 50 Hz
Two waves of same frequency and intensity superimpose on each other in opposite phases. After the superposition, the intensity and frequency of waves will
increase
decrease
remain constant
become zero
A standing wave is represented by y = a sin (100t) cos(0.01)x, where y and a are in millimetre, t in second and x is in metre. Velocity of wave is
104 m/s
1 m/s
10-4 m/s
Not derivable from above data
For production of beats the two sources must have
different frequencies and same amplitude
different frequencies
different frequencies, same amplitude and same phase
different frequencies and same phase
Velocity of sound waves in air is 330 m/s. For a particular sound wave in air, path difference of 40 cm is equivalent to phase difference of 1.6 π. The frequency of this wave is
165 Hz
150 Hz
660 Hz
330 Hz
The transverse wave represented by the equation has
amplitude = 4π
speed of propagation = 5
Two trains move towards each other with the same speed. The speed of sound is 340 m/s. If the height of the tone of the whistle of one of them heard on the other changes times, then the speed of each train should be
20 m/s
2 m/s
200 m/s
With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
energy, momentum and mass
energy
energy and mass
energy and linear momentum
