# Solution - Reflection of Light - Spherical Mirrors

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ConceptReflection of Light - Spherical Mirrors

#### Question

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

Principal focus

#### Solution

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

Principal axis

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

Centre of curvature

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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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Explain the following term related to spherical lenses:-

principal axis

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A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?

(A) MW

(B) MS

(C) SW

(D) MW–MS

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