Light travels from medium A to medium B

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Light travels from medium A to medium B. Which statement is always true for the pair of relative refractive indices

n_{AB}

and

n_{BA}

? (a)

n_{AB}+n_{BA}=1

(b)

n_{AB}\,n_{BA}=1

(c)

n_{AB}=n_{BA}

(d)

n_{AB}+n_{BA}=2

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