Home
Class 12
PHYSICS
The focal length of the objective of an ...

The focal length of the objective of an astronomical telescope is 1.0 m. If the magnifying power of telescope is 20, then what is the length of the telescope for relaxed eye ?

A

85 cm

B

95 cm

C

105 cm

D

115 cm.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Why does the objective lens of an astronomical telescope have a large light gathering power?

The focal length of the objective of a telescope is 60 cm. To obtain a magnification of 20, the focal length of the eye-piece should be :

Diameter of the objective of a telescope is 200 cm. What is the resolving power of a telescope ? Take wavelength of light =5000 Å .

An astronomical telescope is set for normal adjustment and the distance between its objective and eye piece is 1.05 cm. The magnifying power of the telescope is 20. What is the focal length of the objective ?

To increase magnifying power of a telescope, we should increase

When a telescope is in normal adjustment, the distance of the objective from the eyepiece is found to be 100 cm. If the magnifying power of the telescope, at normal adjustment is 24, the focal lengths of lenses are

The diameter of the objective of a telescope is 1.2m. Ig the wavelength of light used is 546 nm, then calculate the limit of resolution of the telescope.

The normal magnifying power of a simple microscope is 6. The focal length of the convex lens used is

The diameter of objective of an astronomical telescope is 0.1 m and wavelength of light used is 6000 overset@A . Resolving limit of telescope will be nearly

What happens to the magnifying power of microscope, when its length increases ?