A bat moving at 10 ms^(-1) towards a wal...

A bat moving at 1`0 ms^(-1)` towards a wall sends a sound signal of 8000 Hz towards it. On reflection it hears a sound of frequency f. The value of g in Hz is close to (speed to sound `= 320 ms^(-1)`) :-

8424

8516

8258

8000

Text Solution

Verified by Experts

The correct Answer is:

`f'=f_(0)((V+V_(S))/(V-V_(S)))=8000 xx((330)/(310))=8516`

Topper's Solved these Questions

WAVES AND OSCILLATIONS
ALLEN|Exercise Part-1(Exercise-05)[B]|42 Videos
WAVES AND OSCILLATIONS
ALLEN|Exercise Part-1(Exercise-04)[B]|13 Videos
SEMICONDUCTORS
ALLEN|Exercise Part-3(Exercise-4)|51 Videos

Similar Questions

Explore conceptually related problems

A car is moving with 90 km h^(-1) blows a horn of 150 Hz, towards a cliff. The frequency of the reflected sound heard by the driver will be (speed of sound in air is 340 ms^(-1) )

A car sounding its horn at 480Hz moves towards a high wall at a speed of 20ms^(-1) , the frequency of the reflected sound heard by the man sitting in the car will be nearest to , (speed of sound =330m//s)

A car is moving towards a stationary wall making Horn of frequency 400 Hz. The reflected frequency heard by a driver of car is 500 Hz.Find the speed of car. [v= speed of sound]

A rocket is moving at a speed of 220 ms^(-1) towards a stationary target. While moving, it emits a wave of frequency 500 Hz. What is the frequency of the sound as detected by the target?

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)

An operator sitting in his base camp sends a sound signal of frequency 400 Hz. The signal is reflected back from a car moving towards him The frequency of the reflected sound is found to be 410 Hz. Find the speed of the car. Speed of sound in air = 324 m s^-1 .

A train is approaching towards a platform with a speed of 10 ms^(-1) , while blowing a whistle of frequency 340 Hz. What is the frequency of whistle heard by a stationary observer on the platform ? (given, speed of sound =340 ms^(-1) )

ALLEN-WAVES AND OSCILLATIONS-Part-1(Exercise-05)[A]

A whistle producing sound waves of frequencies 9500 Hz and above is ap...
Text Solution
|
A sound absorber attenuates the sound level by 20 dB. The intensity de...
Text Solution
|
While measuring the speed of sound by performing a resonance column ex...
Text Solution
|
A wave travelling along the x-axis is described by the equation v(x, t...
Text Solution
|
Three sound waves of equal amplitudes have frequencies (v - 1), v, (v ...
Text Solution
|
A motor cycle starts from rest and accelerates along a straight path a...
Text Solution
|
The equation of a wave on a string of linear mass density 0.04 kgm^(-1...
Text Solution
|
The transverse displacement y(x, t) of a wave on a string is given by ...
Text Solution
|
Statement-1: Two longitudinal waves given by equation y(1)(x,t)=2asin(...
Text Solution
|
A travelling wave represented by y=Asin (omegat-kx) is superimpose...
Text Solution
|
A cylindrical tube, open at both ends, has a fundamental frequency f i...
Text Solution
|
A sonometer wire of length 1.5m is made of steel. The tension in it pr...
Text Solution
|
A pipe of length 85cm is closed from one end. Find the number of possi...
Text Solution
|
A train is moving on a straight track with speed 20ms^(-1). It is blow...
Text Solution
|
A bat moving at 10 ms^(-1) towards a wall sends a sound signal of 8000...
Text Solution
|
A source of sound emits sound waves at frequency f(0). It is moving to...
Text Solution
|
A uniform string of length 20m is suspended from a rigid support. A sh...
Text Solution
|
A pipe open at both ends has a fundamental frequency f in air. The pip...
Text Solution
|
Two engines pass each other moving in opposite directions with uniform...
Text Solution
|
A toy-car, blowing its horn, is moving with a steady speed of 5 m//s, ...
Text Solution
|