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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
- A magnet of length 10 cm and magnetic moment 1 A-m² is placed
- When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm
- Excitation energy of a hydrogen like ion, in its first excitation state, is 40.8 eV.
- A soap bubble oscillates with time period T, which in turn depends on the pressure
- A Gaussian surface in the cylinder of cross-section πa² and length L is immersed
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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