The shiny outer surface of a hollow sphere of aluminium of radius 60cm is to be used as a mirror :; (a) What will be the focal length of this mirror?; (b) Which type of spherical mirror will it provide ?; (c) State whether this spherical mirror will diverge or converge light rays.
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(a)f=R/2. =60/2=30. (b) R=+60 then it is a convex mirror.And diverge the light rays
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