Q36 of 53 Page 1

Which out of the two spherical mirrors, has positive focal length? Which out of the two, will form a real and inverted image, at its ‘F’ point which can be taken on the screen.

Out of the two-spherical mirror, convex mirror has positive focal length.


Concave mirror forms a real and inverted image of the object at ‘F’ point which can be taken on the screen. However, the image is highly diminished in the size.


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(a) one –half of a convex lens is covered with a black paper. Will such a lens produce an image of the complete object? Support your answer with a ray diagram.

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