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QNEET-2017-Ph-997: NEET 2017 Physics - Class 11 NEET-2017-Ph-997 Solution: Two cars moving in opposite directions approach each other with …
Two cars moving in opposite directions approach each other with speed of 22 m and 16.5 m 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 is 340 m ) 361 Hz 411 Hz 448 Hz 350 Hz
Multiple Choice Options
- A 361 Hz
- B 411 Hz
- C 448 Hz
- D 350 Hz
Step-by-Step Verified Solution
As we known from Doppler's Effect
f a p p r e n t = f 0 [ v + v 0 v _ v s ] = 400 [ 340 + 16.5 340 _ 22 ]
_ f apprent = 448 Hz