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Recent questions tagged telegram-46950

(chatquestion)...A sound wave of wavelength 2 travels horizontally towards the right with a velocity V. It strike and reflects from a vertical plane surface, travelling at a speed v towards the left. The numberd positive crests striking in a time interval of 3 sec, on the wall is (A) 3 (V+ vyn. (C) (V+vy32. (B)3(V – v)2. (D) (V – v)/3). It is observed that it

asked Jan 23, 2020 by balaji.thirumalai

1 answer

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