Physics > 2014 > 28
WASSCE
Refraction of light differs from reflection in that, in refraction
I. at least two media are involved
II. there is a change in the direction of the ray
III. the speed of the ray changes
I. at least two media are involved
II. there is a change in the direction of the ray
III. the speed of the ray changes
A.
I only
B.
I and II only
C.
II and III only
D.
I and III only
Answer: B
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