Home
Class 12
PHYSICS
The focal length of objective and eyelen...

The focal length of objective and eyelens of a astronomical telescope are respectively 20 cm and 5 cm. Final image is formed at least distance of distinct vision. The magnifying power will be

A

`-4.8`

B

`-4.0`

C

`4.8`

D

`4.0`

Text Solution

Verified by Experts

The correct Answer is:
1
Promotional Banner

Similar Questions

Explore conceptually related problems

The focal length of objective and eye lens of a astronomical telescope are respectively 2m and 5 cm . Final image is formed at (i) least distance of distinct vision (ii) infinity. The magnifying power in both cases will be

The focal length of objective and eye lens of a astronomical telescope are respectively 2m and 5 cm . Final image is formed at (i) least distance of distinct vision (ii) infinity. The magnifying power in both cases will be

The focal length of the lensese of an astronomical telescope are 50 cm and 5 cm. The length of the telescope when the image is formed at the least distance of distinct vision is

The focal lengths of the objective and the eyepiece of an astronomical telescope are 20 cm and 5 cm respectively. If the final image is formed at a distance of 30 cm from the eye piece, find the separation between the lenses for distinct vision:

A convex lens of focal length 10 cm and imag formed by it, is at least distance of distinct vision then the magnifying power is

The focal lengths of the objective and eye lenses of a telescope are respectively 200 cm and 5 cm . The maximum magnifying power of the telescope will be

The focal lengths of the objective and eye lenses of a telescope are respectively 200 cm and 5 cm . The maximum magnifying power of the telescope will be

Explain the construction and working of an astronomical telescope. Calculate its magnifying power when the image is formed at the least distance of distinct vision.

The magnification produced by the objective lens of a compound microscope is 25. The focal length of eye piece is 5 cm and it forms find image at least distance of distinct vision. The magnifying power of the compound microscope is

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be