A student obtained a sharp image of a lighted candle on a screen using a convex
lens. Now he wants to focus a distant lamp on a far away electric pole. In which
direction should the lens be moved for this purpose with respect to the screen, to get
a sharp image on the screen? Justify your answer.
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Answered by
8
he should move the lens towards the screen because
as he moves the lens towards the screen, the distance between the candle (object) and the lens will increase. consider the object is coming from infinity which converges after refraction at the principal focus
as he moves the lens towards the screen, the distance between the candle (object) and the lens will increase. consider the object is coming from infinity which converges after refraction at the principal focus
CoolK12:
Thanks
welcum
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Answered by
3
In order to get a clear and sharp image, the lens should be moved towards the screen when the lens is moved towards the screen the objects moves far away from the lens. when the light rays come in the convex lens converges the rays of light and focuses the image so this process helps to get the image on the screen that is the distant lamp.
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