Light in a frozen block of ice reflects off the ice-air interface at the surface of the block. What phase shift does it undergo? A) 0°
B) 90°
C) 180°
D) 270°
E) It does not undergo any phase shift.

i believe it is b. what was the cause of the big bang

hope this !

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.