An astronomical telescope has objective and eye-piece focal lengths 200 cm and 4 cm respectively. For distinct vision take the least distance of distinct vision as 25 cm.

Physics · Geometrical optics · optical instruments

JEE MainsJEE Advanced

An astronomical telescope has objective and eye-piece focal lengths 200 cm and 4 cm respectively. For distinct vision take the least distance of distinct vision as 25 cm.

Sub-question 1

The magnifying power of the telescope for the normal vision is

Options

Sub-question 2

The length of the telescope for normal vision is

Options

Sub-question 3

The magnifying power of the telescope for distinct vision is

Options

Sub-question 4

The length of the telescope for distinct vision is

Options