Answer:
Time, t = 4000 seconds
Explanation:
We know that,
[tex]1\ billion\ km=1.2\times 10^9\ km[/tex]
[tex]1\ billion\ km=1.2\times 10^{12}\ m[/tex]
The speed of light, [tex]c=3\times 10^8\ m/s[/tex]
Let t is the time taken by light. It can be calculated as :
[tex]t=\dfrac{d}{c}[/tex]
[tex]t=\dfrac{1.2\times 10^{12}\ m}{3\times 10^8\ m/s}[/tex]
t = 4000 seconds
So, the time taken by the light is 4000 seconds, Hence, this is the required solution.
