A telescope consisting of two convex lenses of focal lengths `0.20`m and `0.01`m is focussed on a distant object for normal vision. What is the distan

A telescope consisting of two convex lenses of focal lengths `0.20`m and `0.01`m is focussed on a distant object for normal vision. What is the distance between the glasses? If the same telescope is now focussed on an object which is 2 m away from the object glass without altering the accommodation of the eye, by how much does the eye-piece have to be shifted?

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - `.021m`, by `0.022`m away

5 views Answered 2023-02-05 15:29

Related Questions

A compound microscope consists of two convex lenses of focal lengths `0.02`m and `0.15`m. An object is placed at a distance of `0.025`m from the objec

2 Answers 5 Views

A telescope has two convex lenses of focal lengths 10 cm and 1 cm. If the telescope is focussed on a scale 1 m away from the objective and the final i

2 Answers 4 Views

A simple astronomical telescope is designed using two convex lenses of focal lengths 1 m and `0.05`m. Find the magnifying power when the instrument is

2 Answers 4 Views

The focal lengths of the objective and the eye-piese of an astronomical telescope are `0.25`m and `0.025`m, respectively. The telescope is focussed on

2 Answers 5 Views

Two convex lenses of focal lengths 2f and f are arranged to from an eye-piece and are spaced by f. The first lens is to be used as field lens and the

2 Answers 5 Views

A parallel beam of rays is incident on a consisting pf three thin lenses with a common optical axis. The focal length of the lenses are equal to `f_1=

2 Answers 5 Views

The focal lengths of the objective and the eye-piece of an astronomical telescope are 0.25 m and 0.02m, respectively. The telescope is adjusted to vie

2 Answers 7 Views

How would you use two plano-convex lenses of focal lengths 6cm and 4cm to design an eye-piece free from chromatic aberration. What will be its focal l

2 Answers 5 Views

The focal lengths of the objective and the eye-piece of an astronomical telescope are 0.25 m and 0.025 m, respectively. The telescope is focussed on a

2 Answers 6 Views

Two convex lenses of focal lengths `f_(1) and f_(2)` are placed coaxially, a distance `d` apart. If the axis of one of the lenses is lifted parallel t

2 Answers 6 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)