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प्रश्न
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
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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 the centre of curvature of a convex mirror is reflected back along the same path after reflection.
- A ray parallel to the principal axis: A ray of light parallel 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 a convex mirror.
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संबंधित प्रश्न
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
Define the following term in the context of spherical mirrors:- Principal axis
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
The sun is seen before the sunrise and after the sunset.
Explain why a ray of light passing through the center of curvature of a concave mirror, gets reflected along with the same pattern.
