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The phase difference between two points seperated by 0.8 m in a wave of frequency 120 Hz is 0.5 π. The wave velocity is
Options
(a) 144 m/s
(b) 256 m/s
(c) 384 m/s
(d) 720 m/s
Correct Answer:
384 m/s
Explanation:
Phase difference = 2π/λ × Path difference
0.5π = 2π/λ × 0.8 m or λ = (2π × 0.8 m) / 0.5π = 3.2 m
Velocity v = frequency (ʋ) × Wavelength (λ)
= 120 Hz × 3.2 m = 384 m/s.
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An ideal coil of 10 H is connected in series with a resistance of 5Ω and a battery
- The apparent weight of the body of mass 10 kg when it is travelling upwards with
- The electric field associated with an e.m. wave in vacuum is given by
- The phase difference between the flux linked with a coil rotating in a uniform
- A solid sphere, a hollow sphere and a ring are released from top of an inclined
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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