Question

It takes time 8min for light to reach from the sun to the earth surface. If speed of light is taken to be 3*10 to the power 8 m/s, find the distance from the sun to the earth in km.

Answer 1

Distance between the sun and the earth
=Time*Speed
=(8*60) sec * (3*10^8) m/sec
=(1.44*10^11)/10^3 km
=1.44*10^8 km

Hope this helps! :)

Answer 2

Answer: The distance from the sun to the earth is $1.44\times10^{8}\ km$

Experiments:

Given that,

Time t = 8 min

Speed $v= 3\times10^{8}$

We know that,

The speed is defined as:

$v =\dfrac{d}{t}$

The distance is the product of the speed and time. its unit is meter.

Therefore, the distance is

$d = v\times t$

$d = 3\times10^{8}\times 480$

$d = 1.44\times10^{11} m$

$d = 1.44\times10^{8}\ km$

Hence, The distance from the sun to the earth is $1.44\times10^{8}\ km$