A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1. Then (if the sound velocity in air is 300m/s)

A vehicle, with a horn of frequency n is moving with a velocity of 30m

1.	A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n₁. Then (if the sound velocity in air is 300m/s)
A.	n<sub>1</sub>=0.1n
B.	n<sub>1</sub>=0
C.	n<sub>1</sub>=10n
D.	n<sub>1</sub>=-0.1n
Answer» C. n<sub>1</sub>=10n

Discussion

No Comment Found

Related MCQs

Wave has simple harmonic motion whose period is 4seconds while another wave which also possesses simple harmonic motion has its period 3sec. If both are combined, then the resultant wave will have the period equal to ___________
In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.107sec. The frequency of wave is?
The apparent frequency in Doppler’s effect does not depend upon ___________
When sound travels from air to water, which parameter does not change?
Velocity of sound in air is ___________
Lights can travel in a vacuum but not sound, because ______________
A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1. Then (if the sound velocity in air is 300m/s)
A wave of frequency 100Hz travels along a string towards its fixed end. When this wave travels back, after reflection, a node is formed at a distance of 10cm from the fixed end. The speed of the wave (incident and reflected) is?
Statement: When two vibration tuning forks having frequencies 256Hz and 512Hz are held near each other, beats cannot be heard.Reason: The principle of superposition is valid if the frequencies of the oscillators are nearly equal.
Statement: When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it.Reason: When a beetle disturbs the sand, it sends pulses is longitudinal, while the other set in transverse.

A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1. Then (if the sound velocity in air is 300m/s)

Discussion

No Comment Found

Related MCQs

Reply to Comment

A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n₁. Then (if the sound velocity in air is 300m/s)