A motorcycle starts from rest and accelerates along a straight line at 2.2 m/s2 . At the…
Physics · JEE Advanced · NTA Exams — Oscillations and Waves
A motorcycle starts from rest and accelerates along a straight line at 2.2 m/s2 . At the starting point of the motorcycle, there is a stationary electric siren. How far has the motorcycle gone when the driver hears the frequency of the siren at 90% of its value when the motorcycle was at rest?
(Speed of sound in air = 330 ms-1)
(Speed of sound in air = 330 ms-1)
- 123.75 m
- 247.5 m
- 495 m
- 990 m
Answer
(B) 247.5 m
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