Home
Class 12
PHYSICS
Two convex lenses of focal lengths 0.3m ...

Two convex lenses of focal lengths `0.3m` and `0.05m` are used to make a telescope. The distance kept between the two is

A

0.35 m

B

0.25 m

C

0.175 m

D

0.15 m

Text Solution

Verified by Experts

The correct Answer is:
A
`L = f_(o) + f_(e) = 0.3 + 0.05 = 0.35` m.
Promotional Banner

Similar Questions

Explore conceptually related problems

The power of a lens of focal length 0.5 m is :

The power of a lens of focal length 0.5 m is :

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 ?

Two convex lenses of focal length 20 cm and 1 cm constitute a telescope. The telescope is focussed on a point which is 1 m away from the objective. Calculate the magnification produced and the length of the tube. If the final image is formed at distance of 25 cm from of eyepiece.

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 object glass and the final image is formed at the least distance of distinct vision. Find the magnification produced and the distance between the lenses.

Two convex lenses of focal length f_1 and f_2 are mounted coaxially separated by a distance. If the power of the combination is zero, the distance between the lenses is

Two convex lenses of focal length 0.01 , and 0.06 m, respectively are arranged to from a microscope. A small object is placed 0.012 m from object glass. If the image seen appears to be 0.25 m from the eye-piece, what is the distance between the object glass and eye-piece?

How would you combine two lenses of focal lengths 25 cm and 2.5 cm to make a telescope ? What is the magnifying power of this telescope ?