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CBSE Class 12-science Answered

the image of an object formed by a lens the screen is not in sharp focus. how can we obtain a sharp image without disturbing the setup?
Asked by thajvirkaur | 30 Jan, 2012, 12:36: PM
answered-by-expert Expert Answer
You could insert a second lens in the focal path, between the object and the first lens. The second lens can be designed (or moved) to focus the image on the screen.

This is the same function that eyeglasses do for people with poor vision. The second lens, the eyeglasses, are inserted between the viewed object and the lens of the eyes.



Answered by | 30 Jan, 2012, 02:37: PM
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