Two points on a travelling wave, having frequency 500 Hz and velocity 300 m s - 1 , are 60 ° out of phase. The minimum distance between the two points is

Question

Two points on a travelling wave, having frequency 500 Hz and velocity 300 m s - 1 , are 60 ° out of phase. The minimum distance between the two points is, 0.2, 0.1, 0.5, 0.4

MARKS App · Accepted Answer

v = n λ ∴ λ = v n = 300 500 = 3 5 m Now, phase difference = 2 π λ × path difference ∴ π 3 = 2 π λ × path difference o r π 3 = 2 π × 5 3 × path difference path difference = 3 × 60 × π 2 π × 5 × 180 = 0.1 m

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