Home
Class 12
PHYSICS
In an eye-piece, field lens and eye lens...

In an eye-piece, field lens and eye lens have focal lengths 7.5 cm and 7.3 cm. To eliminate spherical aberration, distance between them would be

A

0.2 cm

B

0.4 cm

C

0.1 cm

D

0.5 cm

Text Solution

Verified by Experts

The correct Answer is:
A
d = `f_(1) - f_(2) = 7.5 - 7.3 = 0.2 ` cm
Promotional Banner

Similar Questions

Explore conceptually related problems

A telescope uses an objective lens of focal length f_0 and an eye lens of focal length f_e . In normal adjustment, distance between the two lenses is.

A compound microscope consists of an objective lens of focal length 1 cm and an eye piece of focal length 5 cm with a separation of 10 cm. The distance between an object and the objective lens, at which the strain on the eye is minimum is n/40cm . The value of n is ___________

The dispersive power of the material of lens of focal length 20cm is 0.8 . The longitudinal chromatic aberration of the lens is

The focal lengths of the objective and eyelens of a microscope are 1.6 cm and 2.5 cm respectively. The distance between the two lenses is 21.7 cm. If the final image is formed at infinity, the distance between the object and the objective lens is :

A compound microscope has an objective of focal length 2 cm and an eye-piece of focal length 3 cm . An object is placed at a distance of 2.4cm in front of the field lens. Find the magnifying power of the instrument and length of the tube is (a) final image is at infinity and (b) final image is at least distance of distinct vision.

A Galilean telescope obtains the erect final image by using a diverging lens of focal length 7.5 cm instead of an intermediate erecting lens. If the focal length of the objective is 150 cm, what is the separation between the objective and the eyepiece?