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Solution - Reflection of Light - Spherical Mirrors

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Question

Define the following term in the context of spherical mirrors:-

Principal focus

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Define the following term in the context of spherical mirrors:-

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A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?

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Solution for concept: Reflection of Light - Spherical Mirrors. For the course 8th-10th CBSE
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