(a) Define the following terms in the context of spherical mirrors : (i) Pole (ii) Centre of curvature (iii) Principal axis (iv) Principal focus.(b) Draw ray diagrams to show the principal focus of a : (i) Concave mirror (ii) Convex mirror (c) An object is placed infront of a mirror and the image is magnified. State the type of the mirror and property of the mirror.
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pole is the mid point of the reflecting surface of a spherical mirror...
the centre of the hollow sphere of glass in which spherical mirror is a part of it is called as centre of curvature
principal axis is an imaginary line which connects the pole,focus and centre
principal focus is a point on principal axis when parallel rays of light are incident on spherical mirror.it converges into a point(concave mirror)or tend to converge(convex mirror).
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