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प्रश्न
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
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उत्तर
In the case of a concave mirror if the object is placed at a Focal point then ray emerging from it after reflecting from the mirror would be parallel to the principal axis.
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संबंधित प्रश्न
A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Name the two kinds of spherical mirrors and distinguish between them.
For what position of object, the image formed by a concave mirror is magnified and erect?
What is a mirror formula?
The distance from the pole to the focus is called ______.
Define focal length.
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
