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Define the terms focus and focal length ...

Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.

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Focus of concave mirror : The focus of a concave mirror is a point on the principal axis at which the light rays incident parallel to the principal axis, after reflection from the mirror meet.
Focal length of concave mirror: The distance of focus F from the pole P of the mirror is called the focal length of the mirror.
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ICSE-LIGHT-TOPIC 2 Spherical Mirrors (2 Marks Questions )
  1. Define the terms focus and focal length of a concave mirror. Draw dia...

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  2. Complete the ray diagram as shown to show the formation of image for ...

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  3. What is the focal length of a concave mirror of radius of curvature ...

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  4. What is a spherical mirror?

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  5. The radius of curvature of a convex mirror is 40 cm. Find its focal l...

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  6. Name the two kinds of spherical mirrors and distinguish between them.

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  7. The focal length of a concave mirror is 10 cm. Find its radius of cur...

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  8. State the direction of incident ray which after reflection from a sphe...

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  9. The image formed by a convex mirroris of size one third the size of ob...

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  10. The erect image formed by a concave mirror is of size double the size...

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  11. The magnification for a mirror is -3. How are u and v related?

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  12. (a) For what position of object, the image formed by a concave mirror...

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  13. State the position of object for which the image formed by a concave ...

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  14. Write three characteristics of the image formed by a plane mirror.

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  15. What is a real image?

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  16. What type of spherical mirror can be used to obtain a real image of a...

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  17. Discuss the position and nature of image formed by a convex mirror wh...

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  18. Name the kind of spherical mirror used to obtain : A real and enlarged...

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  19. Name the kind of spherical mirror used to obtain : A virtual and enla...

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  20. Name the kind of spherical mirror used to obtain : A virtual and dimin...

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