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प्रश्न
How is the focal length of a spherical mirror related to its radius
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उत्तर
The distance from the pole to the focal point is called the focal length (f). The focal length of a spherical mirror is then approximately half its radius of curvature.
Focal length = Radius of curvature / 2
Or 2 F = R
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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.
How is a spherical mirror used to converge a beam of light at a point? Name the type of mirror used.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
Discuss the position and nature of image formed by a convex mirror when an object is moved from infinity towards the pole of mirror.
Name the kind of mirror used to obtain:
A virtual and enlarged image
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find:
- the focal length of the mirror
- position of image
Does the mirror name by your form a real image for all locations? Give a reason for your answer.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
