# Two identical waves (of equal amplitude and frequency) arrive in phase at a certain point A. The...

## Question:

Two identical waves (of equal amplitude and frequency) arrive in phase at a certain point A. The resultant wave at point A is

A. a wave of the same frequency and amplitude as the two incoming waves.

B. a wave of the same frequency and twice the amplitude of the two incoming waves.

C. a wave of the same amplitude and twice the frequency of the incoming waves.

D. a wave of zero amplitude.

## Superposition of waves

When two or more waves travel through the same medium at the same time, we apply the principle of superposition. The law of superposition states that the resultant wave is a sum of the two or more individually propagating waves. This phenomenon is known as interference.

Interference is a phenomenon in which the resultant wave is the sum of the amplitudes of the individual waves.

B. a wave of the same frequency and twice the amplitude of the two incoming waves. 