Advertisements
Advertisements
Question
Define the term Focus of a concave mirror.
Advertisements
Solution
The focus of a concave mirror is a point on the principal axis of the mirror, where all the rays travelling parallel to the principal axis and close to it after reflection from the mirror converge to that point.
APPEARS IN
RELATED QUESTIONS
Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What is the nature of spherical mirror?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What is the advantage of using a carbon paper rather than a white paper?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
State whether this spherical mirror will diverge or converge light rays.
An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Complete the following diagrams shown in the following figures by drawing the reflected rays.
Define focal length.
If the real image of a candle flame formed by a lens is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle be placed from the lens?
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
