Plz help..
And don't spam
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Plz help..And don't spam
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Explanation:
n21 = sin i/sin r
= sin45/sin30
=( 1/√2)/1/2
= √2
n12 = sin r/sin i
=( 1/2)/1/√2
= 1/√2
Answer:
1/root 2 is the correct answer:)