Question

The sun is approximately 93,000,000 miles from earth. Light travels 186,000 miles per second.How long does it take the light from the sun to reach the earth?(Give your answer in minutes.)

Answer 1

Given:

Distance of sun, d=93,000000 miles

Speed of light, s=186000 m/s

The objective is to find the time t taken by the light to reach earth.

It is known that the formula of distance is,

`\begin{gathered} \text{Distance}=\text{Speed}* Time \\ d=s* t \\ t=(d)/(s) \\ t=(93000000)/(186000) \\ t=500\text{ s} \end{gathered}`

To convert into minutes

`\begin{gathered} 1\text{ min=60 s} \\ 500s=8.3\text{ mins} \end{gathered}`

Hence light takes 8.333 mins to reach earth from the sun.