Advertisements
Advertisements
Question
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.
Advertisements
Solution
This spherical mirror will diverge the light rays.
APPEARS IN
RELATED QUESTIONS
Explain the following term related to spherical lenses: focal length
Define the Focal length of a spherical mirror
Name the spherical mirror which can produce a virtual and diminished image of an object.
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
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.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
The diagram below in Figure, shows a convex mirror. C is its centre of curvature and F is its focus. (i) Draw two rays from A and hence locate the position of image of object OA. Label the image IB. (ii) State three characteristics of the image.
For what position of object, the image formed by a concave mirror is magnified and erect?
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror, by drawing.
An object of height 2 cm is placed at a distance of 20 cm in front of a concave mirror of a focal length of 12 cm. Find the position, size, and nature of the image.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.

The distance from the pole to the focus is called ______.
The spherical mirror used in a beauty parlour as make-up mirror is _______.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
Define the radius of curvature.
