Advertisements
Advertisements
Question
Define the following term in the context of spherical mirrors:- Centre of curvature
Solution
Centre of curvature:-
The centre of curvature is the centre of a sphere from which the given spherical mirror (convex or concave) is obtained. It is denoted by the letter (C).
APPEARS IN
RELATED QUESTIONS
We can obtain an enlarged and erect image by a convex mirror.
Match the items given in Column I with one or more items of Column II.
Column I | Column II | ||
(a) | A plane mirror | (i) | Used as a magnifying glass. |
(b) | A convex mirror | (ii) | Can form image of objects spread over a large area. |
(c) | A convex lens | (iii) | Used by dentists to see enlarged image of teeth. |
(d) | A concave mirror | (iv) | The image is always inverted and magnified. |
(e) | A concave lens | (v) | The image is erect and of the same size as the object. |
(vi) | The image is erect and smaller in size than the object. |
A virtual image larger than the object can be produced by a ______.
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
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.
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
Draw a ray diagram in each of the following cases to show the formation of image, when the object is placed :
(i) between the optical centre and principal focus of a convex lens.
(ii) anywhere in front of a concave lens.
(iii) at 2F of a convex lens.
State the signs and values of magnifications in the above-mentioned cases (i) and (ii).