Author Question: A telescope with a 60 mm objective lens collects how many times as much light as does your eye's 6 ... (Read 12 times)

Sportsfan2111 · **on:** Jul 27, 2018

A telescope with a 60 mm objective lens collects how many times as much light as does your eye's 6 mm exit pupil?

A) 5 times
B) 10 times
C) 25 times
D) 100 times
E) 250 times

Question 2

What happens when a star exhausts its core hydrogen supply?

A) Its core contracts, but its outer layers expand and the star becomes bigger and brighter.
B) It contracts, becoming smaller and dimmer.
C) It contracts, becoming hotter and brighter.
D) It expands, becoming bigger but dimmer.
E) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness.