Q.

Given the distance between earth and sun is 1.5×10km and velocity of light is  3×105kms1. The time taken for sun light to reach the earth is

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a

300 s

b

400 s

c

500 s

d

600 s

answer is C.

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Detailed Solution

t=dv

=1.5×1083×105

=0.5×1085

=0.5×103=500s

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