To form a better telescope, you can interchange eyepieces for new focal lengths. A new design lets you replace both lenses, which new configuration would make a more powerful telescope?

a. a short focal length objective and a short focal length eyepiece.

b. a long focal length objective and a short focal length eyepiece.

c. a long focal length objective and a long focal length eyepiece.

d. a short focal length objective and a long focal length eyepiece.

Question

Physics

Maxim Sutton

23 March, 22:13

To form a better telescope, you can interchange eyepieces for new focal lengths. A new design lets you replace both lenses, which new configuration would make a more powerful telescope?

a. a short focal length objective and a short focal length eyepiece.

b. a long focal length objective and a short focal length eyepiece.

c. a long focal length objective and a long focal length eyepiece.

d. a short focal length objective and a long focal length eyepiece.

+4

Answers (1)

Know the Answer?

Natasha Cooper · Answer 1

option (b)

Explanation:

for a telescope, the object is placed very far from the objective lens so the focal length of objective is large and the eye piece is of short focal length.

So, long focal length objective and short focal length eyepiece.

Option (b) is correct.