A2-m telescope can collect a given amount of light in 1 hour. under the same observing conditions, how much time would be required for a 6 m telescope to perform the same task?

6.67 minutes

Explanation:

d = Diameter of first telescope = 2 m

d' = Diameter of second telescope = 6 m

Increase in diameter

Time to collect light for first telescope

t = 1 hour = 60 minutes

Time to collect light for second telescope

The time taken would be 6.67 minutes

answer: he got 23

explanation:

option number c is the right answer.