# Pls tell sol for 6,7

Solution,
Q6.
Time take by the light to travel from the sun to the earth,
Speed of light, $c=3×{10}^{8}m/s$
Let the distance of the earth from the sun be d.
Then,

Q7.
Given,
the distance of a star from the earth is d = 8.33 light minutes.
1 light minute is the distance travelled by light in 1 minute.
Thus,

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