Question

The focal length of an objective of a telescope is 3M and diameter 15 centimetre assuming for normal, diameter of The Pupil is 3 millimetre for its complete use focal lengthof eyepiece must be

Answer 1

Answer:

even i have the same question can anyone verify

Explanation:

Answer 2

Answer:

telescope is 3 metre and diameter 15 cm. Assuming for a normal eye, the diameter of the pupil is 3 mm for its complete use, the focal length of eye piece