Home
Class 11
PHYSICS
A detector is released from rest over a ...

A detector is released from rest over a source of sound of frequency `f_(o) = 10^(3) H_(Z)`. The frequency observer by the decector at time `t` is plotted in the graph. The speed of sound in air `(g = 10 m//s^(2))`

A

`330 m//s`

B

`350 m//s`

C

`300 m//s`

D

`310 m//s`

Text Solution

Verified by Experts

The correct Answer is:
C
`f = f_(o) ((nu + nu_(o))/(nu))`
`= 10^(3) (1 + (10 t)/(nu))` (as `nu_(o) = g t`)
Hence, `f` versus `t` graph is straight line of slope
`(10^(4))/(nu)`.
`:. (10^(4))/(nu) =` slope `= (100)/(3)`
`:. nu = 300 m//s`
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES

    DC PANDEY ENGLISH|Exercise Single correct option|1 Videos

  • SOUND WAVES

    DC PANDEY ENGLISH|Exercise Level 2 More Than One Correct|5 Videos

  • SOUND WAVES

    DC PANDEY ENGLISH|Exercise Subjective Questions|1 Videos

  • SOLVD PAPERS 2017 NEET, AIIMS & JIPMER

    DC PANDEY ENGLISH|Exercise Solved paper 2018(JIPMER)|38 Videos

  • SUPERPOSITION OF WAVES

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|8 Videos

Similar Questions

Explore conceptually related problems

A detector is released from rest over a source of sound of frequency f_(0) = 10^(3) Hz . The frequency observed by the detector at time t is plotted in the graph. The speed of sound in air is (g = 10 m // s^(2) )

A source of sound of frequency f_1 is placed on the ground. A detector placed at a height is released from rest on this source. The observed frequency f(Hz) is plotted against time t(sec) . The speed of sound in air is 300(m)/(s) . Find f_1 ( g=10(m)/(s) ).

A source of sound of frequency f_1 is placed on the ground. A detector placed at a height is released from rest on this source. The observed frequency f(Hz) is plotted against time t(sec) . The speed of sound in air is 300(m)/(s) . Find f_1 ( g=10(m)/(s) ).

A source of sound of frequency f_1 is placed on the ground. A detector placed at a height is released from rest on this source. The observed frequency f(Hz) is plotted against time t(sec) . The speed of sound in air is 300(m)/(s) . Find f_1 ( g=10(m)/(s) ).

One train is approaching an observer at rest and another train is receding from him with the same velocity 4 m//s . Both trains blow whistles of same frequency of 243 H_(Z) . The beat frequency in H_(Z) as heard by observer is (speed of sound in air = 320 m//s )

when a source of sound of frequency f crosses stationary observer with a speed v_(s) (lt lt speed of sound v) , the apparent change in frequency Δf is given by

A source emits sound of frequency 600Hz inside water. The frequency heard in air will be equal to (velocity of sound in water =1500(m)/(s) , velocity of sound in air=300(m)/(s))

a bus is moving towards and stationary observer with speed 20 m/s blows a horn of frequency 200 Hz. the frequency of sound heard by the observer is approximately ( take speed of sound 320 m/s)

A source of sound of frequency 500 Hz is moving towards an observer with velocity 30 m/s . The speed of sound is 330 m/s . the frequency heard by the observer will be

A statinary observer receives a sound of frequency 2000 Hz. The variation of apparent frequency and time is shown. Find the speed of source, if velocity of sound is 300(m)/(s)