Question

If two identical waves with a phase difference of 5π are added, the result is

Group of answer choices

This problem cannot be solved without knowing the wavelengths of the two waves.

a wave with zero amplitude.

a wave with the same frequency but twice the amplitude.

a wave with the same amplitude but twice the frequency.

a wave with an intensity equal to the sum of the intensities of the two waves.

Answer #1

since identical waves so both waves have same amplitude and they both differ by 5 pi phase difference

so by vector addition resultant amplitude=sqrt(a1^2+a2^2+ 2a1 a2 cos(5pi)

ie a1=a a2 =a

ie resultant amplitude is zero

If two identical waves with a phase difference of 5π are added,
the result is
This problem cannot be solved without knowing the wavelengths of
the two waves.
a wave with the same amplitude but twice the frequency.
a wave with the same frequency but twice the amplitude.
a wave with an intensity equal to the sum of the intensities of
the two waves.
a wave with zero amplitude.

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