The average distance of Pluto from the Sun is 40 au. How long does it take for light to travel across the solar system from one side of Pluto's orbit to the other?
A) 5 ½ hours
B) 8 minutes
C) 22 hours
D) 11 hours

Question

Quizplus · Accepted Answer

The average distance from the Sun to Pluto is 40 astronomical units (au). Light takes about 8 minutes to travel 1 au. Therefore, to travel across Pluto's orbit (80 au), it takes approximately 80 x 8 minutes = 640 minutes, which is about 10.67 hours, rounded to 11 hours.

The Average Distance of Pluto from the Sun Is 40