Question

You are shopping for telescopes online. You find two in your price range. One of these has an aperture of 20 cm, and one has an aperture of 30 cm. Which should you choose, and why?

Answer 1

Answer:

correct answer is 30 cm as light-gathering power will be better

Explanation:

given data

one aperture have =  20 cm

other aperture have =  30 cm

solution

while we shopping online for buying telescope, we will choose here aperture of 30 cm because as the larger is the lens it will be make here clearer the image so here in both aperture of 20 cm or 30 cm , 30 cm have higher length

so correct answer is 30 cm as light-gathering power will be better