1
Q
Why are plane waves in a ripple tank reflected from a straight barrier at the same angle to the barrier as thre indident wave
A
Becayse their speed and wavelength donnot change on reflection
2
Q
What is it called whe plane waves crossing a boundry between two differen materials
A
Refraction
3
Q
When does refraction occur
A
At a boundry between two different materials because the speed and wavelngth of the waves change
4
Q
At a boundry between two different materials what happens
A
Waves can be transmitted or absorbed
