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An engine is moving towards a wall with a velocity 50 ms⁻¹ emits a note of 1.2 kHz. Speed of sound in air=350 ms⁻¹. The frequency of the note after reflection from the wall as heard by the driver of the engine is
Options
(a) 2.4 kHz
(b) 0.24 kHz
(c) 1.6 kHz
(d) 1.2 kHz
Correct Answer:
1.6 kHz
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In vacuum, to travel distance d, light takes time t and in medium to travel distance
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- A wire mesh consisting of very small squares is viewed at a distance
- The damping force on an oscillator is directly proportional to the velocity.
- A focal length of a lens is 10 cm. What is power of a lens in dioptre?
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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