Advertisements
Advertisements
प्रश्न
Explain why, a ray of light passing through the centre of curvature of a concave mirror gets reflected back along the same path.
उत्तर
A ray of light passing through the centre of curvature of a concave mirror gets reflected along the same path. This is because, it strikes the mirror normally or perpendicularly.
APPEARS IN
संबंधित प्रश्न
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should the position of the object be relative to the mirror? Draw ray diagram to justify your answer.
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focused image can be obtained? Find the size and the nature of the image.
With the help of a labelled ray diagram, describe how a converging mirror can be used to give an enlarged upright image of an object.
An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm.
State two characteristics of the image formed.
What would your image look like if you stood close to a large:
concave mirror?
With the help of a labelled diagram, explain how a concave lens diverges a beam of parallel light rays. Mark the principal axis, optical centre, principal focus and focal length of the concave lens on the diagram.
An object at a distance of 30 cm from a
concave mirror gets its image at the same point. The focal length of the mirror is ______.
______ mirrors make things look larger when objects are placed close to them.
Define principal focus of the concave mirror.
