Q.

When both source and observer approach each other with a speed equal to the half the speed of sound, then determine the percentage change in frequency of sound as detected by the listener.

Moderate

Unlock the Full Solution and Master the Concept

Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept

By Expert Faculty of Sri Chaitanya

answer is 200.

(Detailed Solution Below)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Here we can use general formula of Doppler effect.fapp=fnv−vov−vs ………(i)The direction of sound wave is always from source to observer. In this case both the source and observer are moving towards each other. The direction of motion of observer is opposite to the velocity of sound. So Eq. (i) becomesfapp=fnv−−vov−vs=fnv+vov−vsThe speed of source and observer is equal to half the speed of sound.Hence fapp=fnv+v2v−v2=3fnPercentage change in frequency% change =fapp −fnfn×100=3fn−fnfn×100=200%

Choose your Grade and Exam

Connect with our

Expert Counsellors

access to India's best teachers with a record of producing top rankers year on year.

+91

We will send a verification code via OTP.