Advertisements
Advertisements
Question
What is the relationship between the focal length and radius of curvature?
Advertisements
Solution
The relationship between the focal length, f, and radius of curvature, r is
f = 1/2 x r.
APPEARS IN
RELATED QUESTIONS
Define the following term in the context of spherical mirrors:- Centre of curvature
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
State whether the image in part (a) is real or virtual?
The focal length of a concave mirror is 10 cm. Find its radius of curvature.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term:
concave mirror
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
