Question

Stationary waves are formed when :

• A. two waves of equal amplitude and equal frequency travel along the same path in opposite direction
• B. two waves of equal wavelengths and amplitude travel along the same path with equal speeds in opposite directions
• C. two waves of equal wavelenght and equal phase travel along the same path with same speed
• D. two waves of equal amplitude and speed travel along the same path in opposite directions

Answer 1

The correct option is B two waves of equal wavelengths and amplitude travel along the same path with equal speeds in opposite directions

A stationary wave is a wave that remains in a constant position. It can arise in a stationary medium as a result of interference between two waves of equal wavelengths, travelling along the same path but in opposite directions. They should have almost same amplitude.