A car moving at 108 km/h finds another c...

A car moving at 108 km/h finds another car in front of it going in the same direction at 72 km/h. The first car sounds a horn that has a dominant frequency of 800 Hz. What will be the apparent frequency heard by the driver in the front car? Speed of sound in air = 330 m/s.

Text Solution

Verified by Experts

827 Hz

Topper's Solved these Questions

WAVE MOTION AND SOUND
AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|81 Videos
WAVE MOTION AND SOUND
AAKASH SERIES|Exercise EXERCISE (VERY SHORT ANSWER QUESTIONS)|25 Videos
WAVE MOTION
AAKASH SERIES|Exercise PRACTICE SHEET ADVANCED (INTEGER TYPE QUESTIONS)|10 Videos
WAVE OPTICS
AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|20 Videos

Similar Questions

Explore conceptually related problems

Two cars moving in opposite directions approach each other with speed of 22m/s and 16.5 m/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 Car is travelling at (v//10) ms^(-1) and sounds horn of frequency 990 Hz. The apparent frequency heard by a police chasing the car at (v//9) ms^(-1) where V is velocity of sound

A siren emitting a sound of frequency 1000 Hz moves away from you towards a cliff at a speed of 10 m/s. (a) What is the frequency of the sound you hear coming directly from the siren ? (b) What is the frequency of the sound you hear reflected off the cliff (c) What beat frequency would you hear ? Take the speed of sound in air as, 330 m/s.

Two trucks heading in opposite directions with speeds of 60 kmph and 70 kmph respectively, approach each other. The driver of the first truck sounds his horn of frequency 400Hz. What frequency does the driver of the second truck hear ? (Velocity of sound = 330 m //s ).After the two trucks have passed each other, what frequency does the driver of the second truck hear ?

A train running at 108 km/hr towards east whistles at a frequency of 800 Hz. The frequencies heard by a passenger sitting in the train and a person standing near the track whom the train has just passed (Speed of Sound =330 m/s)

AAKASH SERIES-WAVE MOTION AND SOUND-PROBLEMS (LEVEL - I)

An organ pipe has two successive harmonics withb frequencies 400 and 5...
Text Solution
|
The fundamental frequency of a closed organ pipe is 220 Hz. Find t...
Text Solution
|
The fundamental frequency of a closed organ pipe is 220 Hz. The sec...
Text Solution
|
A source of frequency 10 kHz when vibrated over the mouth of a closed ...
Text Solution
|
A closed pipe and an open pipe of same length produce 2 beats, when th...
Text Solution
|
A tuning fork produces 4 beats per second with the other tuning fork o...
Text Solution
|
Two tuning forks when sounded together produce 5 beats in 2 seconds. T...
Text Solution
|
Two progressive waves y(1) = 4 sin 400 pi t and y(2) = 3 Sin 404 pi t ...
Text Solution
|
Calculate the frequency of beats produced in air when two sources of s...
Text Solution
|
Two sitar string A and B playing the note 'Ga' are slightly out of tun...
Text Solution
|
The frequency of a tuning fork 'A' is 2% greater than that of a standa...
Text Solution
|
A man standing at some distance from a cliff hears the echo of sound a...
Text Solution
|
A motor car approaching a cliff with a velocity of 90 kmph sounds the ...
Text Solution
|
A person standing between two parallel hills fires a gun. He hears the...
Text Solution
|
A tuning fork of unknown frequency makes 5 beats per second with anoth...
Text Solution
|
A traffic policeman standing on a road sounds a whistle emitting the m...
Text Solution
|
A person riding a car moving at 72 km/h sounds a whistle emitting a wa...
Text Solution
|
A person riding a car moving at 72 km/h sounds a whistle emitting a wa...
Text Solution
|
A car moving at 108 km/h finds another car in front of it going in the...
Text Solution
|
A tuning fork of frequency 328 Hz is moved towards a wall at a speed o...
Text Solution
|