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Two car moving in opposite directions approach each other with speed of `22m//s` and `16.5m//s` respectively. The driver of the first car blows a horn having a frequency `400 Hz`. The frequency heard by the driver of the second car is [velocity of sound `340m//s`].

A

350 Hz

B

361 Hz

C

411 Hz

D

448 Hz

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Two cars moving in opposite directio approach each other with speed of 22m//s and 16.5m//s respectively . The driver of the first car blows a horn having a frequency 400Hz . The frequency heard by the driver of the second car is [ velocity of the sound 340m//s]

    A
    `350Hz`
    B
    `361Hz`
    C
    `411Hz`
    D
    `448Hz`

  • Two cars moving in opposite directions approach each other with speed of 22 m/s and 16.5 m/s respectively. The driver or the first car blows a horn having a frequency 400 Hz .The frequency heard by the driver of the second car is (velocity of sound 340 m/s):

    A
    361 Hz
    B
    411 Hz
    C
    448 Hz
    D
    350 Hz

  • Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s) :-

    A
    425 Hz
    B
    300 Hz
    C
    450 Hz
    D
    350 Hz

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    A train is moving with speed 72 km/h towards a hill blows a whistle of frequency 1240Hz. the frequency of echo heard by driver is(speed of sound=330m/s)

    Two cars P and Q are approaching each other with velocities of 36 km/h and 72 km/h respectively. The frequency of a note emitted by car P as heard by the person sitting in car Q is 850 Hz. What will be the frequency of note heard by person sitting in car P ? Velocity of sound = 340 m/s.

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