Home
Class 12
PHYSICS
A vehicle sounding a whistle of frequenc...

A vehicle sounding a whistle of frequency 256Hz is moving on a straight road,towards a hill with velocity of `10ms^-1`. The number of beats per second observed by a person travelling in the vehicle is (velocity of sound = `300ms^-1`

A

0

B

10

C

14

D

16

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SET (EXERCISE-VI (LEVEL-II(ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS))|4 Videos

  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SET (EXERCISE-VI (LEVEL-II(ADVANCED) MORE THAN ONE CORRECT ANSWERT TYPE QUESTIONS))|3 Videos

  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SET (EXERCISE-V (LEVEL-II(ADVANCED) INTEGER TYPE QUESTIONS))|3 Videos

  • UNITS AND MEASUREMENTS

    AAKASH SERIES|Exercise EXERCISE -3|66 Videos

  • WAVE MOTION AND SOUND

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|81 Videos

Similar Questions

Explore conceptually related problems

If vibrating tuning fork of frequency 255Hz is moving with a velocity 4ms^-1 towards the wall the number of beats heard per second is (speed of sound in air = 340ms^-1 ).

A source producing sound of frequency 170 Hz is approachig a stationary observed with a velocity of 17ms^-1 . The apparent change in the wavelength of sound heard by the observer is (speed of sound in air = 340ms^-1 )

A car with a horn of frequency 620 Hz, travels towards a large wall with a speed 20ms^-1 . If velocity of sound is 330ms^-1 the frequency of echo of sound of horn as heard by driver

A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of 15 ms^(-1) Then, the frequency of sound that the observer hears in the echo reflected from the cliff is

A whistle of frequency 540 Hz rotates in a horizontal circle of radius 2 m at an angular speed of 15 rad//s. The highest frequency heard by a listener at rest with respect to the centre of circle (velocity of sound in air = 300 ms^-1 )