Question

If a wave is going from one medium to another, then

• A. its frequency changes
• B. its wavelength does not change
• C. its speed does not change
• D. its amplitude may change

Answer 1

The correct option is D its amplitude may change

On going for one medium to another. Frequency remains the same while wavelength and wave speed, both change. Amplitude may decrease or remain same depending on the fact that whether there is some absorption of energy at the boundary or not.