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The critical angle for a denser-rarer interface is \(45^{\circ}\). The speed of light in rarer medium is \(3 \times 10^8…

Q1

The critical angle for a denser-rarer interface is \(45^{\circ}\). The speed of light in rarer medium is \(3 \times 10^8 \mathrm{~m} / \mathrm{s}\). The speed of light in the denser medium is:

a

\(7.5 \times 10^7 \mathrm{~m} / \mathrm{s}\)

b

\(2.12 \times 10^8 \mathrm{~m} / \mathrm{s}\)

c

\(3.12 \times 10^7 \mathrm{~m} / \mathrm{s}\)

d

\(\sqrt{2} \times 10^8 \mathrm{~m} / \mathrm{s}\)

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