Home
Class 12
PHYSICS
You are given the following 3 lenses. Tw...

You are given the following 3 lenses. Two construct an astronomical telescope which one will you used as eyepiece and which one as objective?

A

L1,L2

B

L2,L1

C

L2,L3

D

L3,L1

Text Solution

Verified by Experts

The correct Answer is:
B
The objective should have large aperture and large focal length while eyepiece should have small aperture and small focal length.
Promotional Banner

Similar Questions

Explore conceptually related problems

Which one of the following statements is correct? In an astronomical telescope of regracting type,

You are given two convex lenses of focal lengths 10 cm and 60 cm. To make a telescope, which of the two lenses will you use as object lens and which one as eye lens ?

Your are given following three lense. Which two lenses will you use as an eyepiece and as an objective to construct as astronomical telescope ?

(a) Draw a labelled ray diagram to obtain the real image formed by an astronomical telescope is normal adjustment position. Define its magnifying power. (b) You are given three lenses of power 0.5 D , 4D and 10D to design a telescope. (i) Which lenses should be used as objective and eyepiece? Justify your answer. (ii) Why is the aperture of the objective preferred to be large ?

Four double convex lenses with following specifications are available Lens, A, B, C, D, focal length, 100 cm, 100 cm, 0 cm, 5 cm, aperture, 10 cm, 5 cm,2 cm, 2 cm. Which of the given four lenses should be selected as objected and eyepiece to construct an astronomical telescope and why ? What will be the magnifying power and length of the tube of the telescope ?

Which one of the following is not used for construction of ecological pyramids?

Which one of the following is not used for construction of ecological pyramids