Concave lens is the lens which is thinner in the middle than the edge. A parallel beam of light falls on a concave lens as shown in the figure. After passing through the concave lens, the rays of light are diverging. Since, a concave lens diverges light rays falling on it, therefore, it is also called diverging lens.
In the case of a convex lens, the nature of image formed depends on the distance of the object from the convex lens. But, this not followed in the case of a concave lens. In the case of a concave lens that whatever be the distance of an object from a concave lens, the image formed by a concave lens is always
(i) Virtual
(ii) Erect and
A Match the entries given in Column - I with those in Column - II.
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Right Option : A | |||||||||||||||
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Which of the following are correct ? (a) Concave lens is the lens which is thinner in the middle than the edge. (b) Concave lenses are used in making spectacles. | |||
Right Option : C | |||
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A concave lens is thick _____________ | |||
Right Option : A | |||
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