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Q.

The time taken by light to reach the earth from the Sun is 8 minutes 20 s. If the whole universe and atmosphere is hypothetically filled up with a liquid so that the time taken by the light to reach the earth from the sun is 12 minutes 30 s then the refractive index of the liquid will be

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a

1

b

1.5

c

2

d

2.5\

answer is B.

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Detailed Solution

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μ=C0Cm⇒μ=tmt0=750s500s=32

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