If the light travels at a speed of 3.0 ×10^5 km per second,the light from a star which is 8.1×10^3 km away from the earth takes __ to reach the surface of the earth
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0
Answer:
3.0 multiply by 8.1
3.0 multiply by 8.1 = 5.4
Answered by
0
Answer:
The time taken by light from star to reach the earth is 0.027 sec
Step-by-step explanation:
Given as :
The distance between light from star to earth = d = 8.1 × km
The speed of light from star to earth = s = 3 × km/s
let The time taken by light from star to reach the earth = t sec
According to question
Time =
or, t =
Or, t =
Or, t = 2.7 ×
∴ t = 2.7 × sec
So, The time taken by light from star to reach the earth = t = 0.027 sec
Hence, The time taken by light from star to reach the earth is 0.027 sec Answer
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