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An object is brought from a far distance...

An object is brought from a far distance towards a concave mirror. How do the nature, position and size of image change?

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When object is very far from the concave mirror, its image is at the focus and it is real, diminished, and inverted. As the object is brought towards the mirror, the image shifts away from the mirror nd its size increases, but it remains smaller than the object. When the object is at centre of curvature of the mirror, the image is also at the centre of curvature and it is of size equal to the size of the object. By further bringing the object towards the mirror, the image gets magnified and it moves away from the centre of curvature. When object is at focus of mirror, the image is at infinity. The image remains real and inverted. If the object is further moved towards the mirror,the image now becomes virtual, erect adn magnified and its is formed behind the mirror.
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ICSE-REFLECTION OF LIGHT-EXERCISE 7(C)
  1. An object is brought from a far distance towards a concave mirror. How...

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  2. What is a spherical mirror?

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

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  4. Define the terms pole, principal axis and centre of curvature with re...

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  5. Draw suitable diagrams to illustrate the action of (i) concave mirror,...

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  6. Name the spherical mirror which (i) diverges (ii) converges the beam o...

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  7. Define the terms focus and focal length of a concave mirror. Draw dia...

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  8. Explain the meaning of the terms focus and focal length in case of a c...

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

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  10. (i) Name the mirrors shown in fig a. and b. (ii) In each case a. and...

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  11. Complete the following diagrams in fig by drawing the reflected rays f...

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  12. Complete the following diagrams in Fig. by drawing the reflected ray f...

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  13. State the two convenient rays that are chosen to construct the image b...

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  14. Draw a ray diagram to show the formation of image by a concave mirror ...

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  15. Draw a ray diagram to show the formation of image by a concave mirror ...

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  16. Draw the image formed by a convex mirror when the object is kept in fr...

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  17. Name the mirror which always produces an erect and virtual image. How ...

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

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

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

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  21. Write two more characteristics of the image.

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