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Define Radius of curvature of the spherical mirror
Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.
Name the kind of mirror used to obtain:
A virtual and enlarged image
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Convex mirror
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
