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प्रश्न
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.
उत्तर
Two convenient rays that are chosen to construct the image by a spherical mirror for a given object:
- A ray passing through the centre of curvature:A ray of light passing through the centre of curvature of a concave mirror or a ray directed in the direction of centre of curvature of a convex mirror is reflected back along the same path after reflection.
2. A ray parallel to the principal axis: A ray of light parallel to the principal axis, after reflection pass through the principal focus in case of a concave mirror or appears to diverge from it in case of convex mirror.
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संबंधित प्रश्न
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.
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
For what position of object, the image formed by a concave mirror is magnified and erect?
Name the kind of mirror used to obtain:
A virtual and enlarged image
How is the focal length of a spherical mirror related to its radius of curvature?
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?
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
What is the difference between virtual images of an object formed by a concave mirror and a convex mirror?
