Two whistles Aand B produces notes of frequencies 660 Hz and 596 Hz respectively. There is a listener at the mid- point of the line joining them. Now the whistle B and the listener start moving with speed 30 m/s away from the whistle A. If speed of sound be 330 m/s, how many beats will be heard by the listenerA. 2B. 4C. 6D. 8

Two whistles Aand B produces notes of frequencies 660 Hz and 596 Hz re

1.	Two whistles Aand B produces notes of frequencies 660 Hz and 596 Hz respectively. There is a listener at the mid- point of the line joining them. Now the whistle B and the listener start moving with speed 30 m/s away from the whistle A. If speed of sound be 330 m/s, how many beats will be heard by the listenerA. 2B. 4C. 6D. 8
Answer» Correct Answer - B

Discussion

No Comment Found

Related InterviewSolutions

A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance 1.21Å between them. The wavelength of the standing wave isA. `1.21 Å`B. `2.42 Å`C. `6.05 Å`D. `3.63Å`
What is the distance between a node and an adjoining antinode in a stationary wave?A. `lambda`B. `(lambda)/(2)`C. `(lambda)/(4)`D. `2 lambda`
A wave frequency `100 Hz` travels along a string towards its fixed end . When this wave travels back after reflection , a node is formed at a distance of `10 cm `from the fixed end . The speed of the wave (incident and reflected) isA. 40 m / sB. 20 m / sC. 10 m / sD. 5 m / s
The equation of stationary wave along a stretched string is given by `y=5 sin ((pix)/(3)) cos 40 pi t `, where x and y are in cm and t in second. The separation between two adjacent nodes isA. 5 cmB. `pi cm`C. 3 cmD. 40 cm
`y= a cos (kx + omega t)` superimposes on another wave giving a stationary wave having node at x = 0. What is the equation of the other waveA. `-a cos (kx+ omega t)`B. `a cos (kx - omega t)`C. `-a cos (kx- omega t)`D. `-a sin (kx + omega t)`
Energy is not carried by which of the following wavesA. StationaryB. ProgressiveC. TransverseD. Electromagnetic
Two waves are approaching each other with a velocity of 16 m/s and frequency n. The distance between two consecutive nodes isA. ` (16)/(n)`B. `(80)/(n)`C. `(n)/(16)`D. `(n)/(8)`
Equation of a stationary wave is `y=10 sin ((pi x)/(4)) cos 20 pi t` Distance between two consecutive nodes isA. 4B. 2C. 1D. 8
In stationary waves all particles between two nodes pass through the mean positionA. At different times with different velocitiesB. At different times with the same velocityC. At the same time with equal velocityD. At the same time with different velocities
A second harmonic has to be generated in a string of length l stretched between two rigid supports. The point where the string has to be plucked and touched areA. Plucked at `l/4` and touch at `l/2`B. Plucked at `l/4` and touch at `(3l)/4`C. Plucked at `l/2` and touches at `l/4`D. Plucked at `l/2` and touched at `(3l)/4`

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment