Home
Class 11
PHYSICS
A small source of sound moves on a circl...

A small source of sound moves on a circle as shown in the figure and an observer is standing on O. Let `n_(1),n_(2)` and `n_(3)` be the frequencies heard when the source is at A, B and C respectively. Then :-

A

`v_1gtv_2ltv_3`

B

`v_1=v_2gtv_3`

C

`v_2gtv_3gtv_1`

D

`v_1gtv_3gtv_2`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

A small source of sound moves on a circle as shown in figure and an observer is sitting at O. Let v_1,v_2,v_3 be the frequencies heard when the source is at A,B and C respectively. .

A 100 W bulb B_(1) and two 60W bulbs B_(2) and B_(3) , are connected to a 250 V source as shown in the figure . Now W_(1) , W_(2) and W_(3) are the output powers of the bulbs B_(1) , B_(2) and B_(3) respectively, then

A source of sound is moving along a circular orbit of radius 3 meter with an angular velocity of 10 rad//s . A sound detector located far away from the source is executing linear simple harmonic motion along the line BD with an amplitude BC = CD = 6 meters . The frequency of oscillation of the detector is (5)/(pi) per second. The source is at the point A when the detector is at the point B . If the source emits a continuous sound wave of frequency 340 Hz , Find the maximum and the minimum frequencies recorded by the detector.

a p -n juction (D) shown in the figure can act an a rectifier An alternatting current source (V) is connected in the circuit The corrent (I ) in the resistor® can be shown by :

One source of sound moves towards stationary listener with a speed, (1)/(10) times speed of sound. Ratio of frequency of sound heard by listener to that emitted from source is .......

A source of sound S emitting waves of frequency 100 Hz and an observer 0 are located at some distance from each other. The source is moving with a speed of 19.4 ms^(-1) at an angle of 60^(@) with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330 ms^(-1) ) is ......

A source of sound emits sound waves at frequency f_(0) . It is moving towards an observer with fixed speed v_(s)(v_(s) lt v where v is the speed in air). If the observer were to move towards the source with speed v_(0) one of the following two graphs (A and B) will give the correct variation of the frequency f heard by the observer as v_(0) is changed, The variation of f with v_(0) is given correctly by :-

One person moves towards a stationary source of sound with a speed (1)/(5) times the speed of sound. Sound emitted from the source has wavelength lamda and frequency f. Frequency and wavelength of sound heard by this person are respectively ......

A source of sound of frequency 256 Hz is moving towards a wall with a velocity of 5 m/s. How many beats per second will be heard by an observer O standing in such a positoin that the source S is between O and wall? (c=330(m)/(s) )

A stationary source emits sound of frequency 1200 Hz. If would blows at the speed of 0.1 v. deduce (a) The change in the frequency for a stationary observer on the wind side of the source (b) Report the calculations for the case when there is no wind but the observer moves at 0.1 v speed towards the source (Given : velocity of sound = v)