Question Detail
Question
Which of the following is/are correct about a standing wave? I. It results from superimposed waves moving in same direction II. It is a sum of two waves moving in opposite directions III. It is a vector sum of two reflected sound waves IV. It can also be called stationary wave
Correct Answer
Option A is the correct answer.
Detailed Explanation
A standing wave is formed by the superposition of two waves of the same frequency and amplitude traveling in opposite directions. It is also called a stationary wave because the pattern does not move. So statements II and IV are correct.
Hint
Recall the definition and formation of a standing wave.