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Determine the amplitudes of the resultan...

Determine the amplitudes of the resultant motion when two sinusoidal waves of same frequency , travelling in the same direction are combined . Their amplitudes are `3.0 cm and 4.0 cm` and they differ in phase by `pi//2 radians `.

Text Solution

Verified by Experts

In interference , amplitudes are added according to vector rules of addition .
`:.` Resultant amplitude
` = sqrt (3^(2) + 4^(2) + 2 xx 3 xx 4 cos pi //2) = 5 cm`
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