28. I) “A convex lens can form a magnified erect as well as magnified inverted image of an
object placed in front of it." Draw ray diagrams to justify this by stating the position of
the object with respect to the lens in each case.
ii) An object of height 4cm is placed at a distance of 20cm from a concave lens of focal
length 10cm. Use lens formula to determine the position of the image formed. Also
find the height of the image.
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how coluld i draw a ray diagram here
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1.A convex mirror is made by silvering the inner surface of the piece of a hollow sphere such that the reflection take place on the outer surface and show show it represented by the symbol C (centre of curvature). the normal at any point of the mirror passes through the centre of curvature. in other words, a line joining any point on the surface of the mirror to the centre of curvature will be e normal to the surface of mirror at the end....
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