Question

two identical waves of amplitude 5cm meet in a large ripple tank what will be the aplitude of the combined wave at a point where they interfere constructive and where they interfere destructively​

Answer 1

(a) For constructive interference the two waves will have higher amplitude of 10 cm.

(b) For destructive interference the two waves will have zero amplitude.

Amplitude of the waves for constructive interference

For constructive interference the two waves will have higher amplitude after constructive interference.

Resulting amplitude = 5 cm + 5cm = 10 cm

Amplitude of the waves for destructive interference

For destructive interference the two waves will have zero amplitude after destructive interference.

Resulting amplitude = 5 cm - 5cm = 0

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