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10 questions from this quiz
Light changes speed
Frequency
n=cvn = \frac{c}{v}n=vc
They are greater than 1
1.5×1081.5 \times 10^81.5×108 m⋅s⁻¹
Higher n means higher optical density
A line perpendicular to the surface
Away from the normal
Towards the normal
It is parallel to the incident ray
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