Question

The distance light travels in one year is approximately $5,870,000,000,000$km. The distance light travels in $100$ years is:

• A. $587\times {10}^8$km
• B. $587\times {10}^{10}$km
• C. $587\times {10}^{-10}$km
• D. $587\times {10}^{12}$km
• E. $587\times {10}^{-12}$km

Answer 1

The correct option is D $587\times {10}^{12}$km

The distance of light travel in one year= $587\times {10}^{10}$.

So, the distance travelled by light in $100$ years $=587\times {10}^{10}\times 100$=$587\times {10}^{12}$.