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NEET 2009 Physics question

PhysicsWavesNEET 2009

A wave in a string has an amplitude of . The wave travels in the ve direction of x axis with a speed of and it is noted that 5 complete waves fit in length of the string. The equation describing the wave is:

Answer: (3)

Solution

Amplitude . Five waves in 4 m gives . Wave number . Angular frequency $ω = kv = 7.85 × 128 ≈

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Question ID VK-090165