A star is 8.1 × 10 13 km away from the earth. Suppose light travels at the spee

MCQ Practice

A star is 8.1 × 10 13 km away from the earth. Suppose light travels at the speed of 3.0 × 10 5 km per second. How long will it take the light from the star to reach the earth ?

Subject: MathematicsTopic: Time Distance

7.5 × 10 3 hours

7.5 × 10 4 hours

2.7 × 10 10 seconds

2.7 × 10 11 seconds

Correct Answer: B