Question

The light from the sun takes $400$ s to reach the earth. Assuming that the speed of the light is $2,00,000km/s$, calculate the distance between the sun and the earth-

• A. $800$ million km
• B. $80$ million km
• C. $100$ million km
• D. $120$ million km

Answer 1

The correct option is B $80$ million km

Given data:

Time taken by light to reach at earth $=400s$

speed of light $=200000km/s$

To find distance between sun and earth $=?$

$Distance=speed\times time$

$=200000\times 400$

$=80\times {10}^{6}Km$

$=80millionkm$