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1 Objects which allow light to pass.
2 Objects which allow some light to pass.
3 When light hits an opaque object, it is reflected and changes direction.
4 It is made up of infinite colours.
5 When light passes through one transparent medium to another, it bends and changes the direction.
6 A ... lens makes light converge.
7 A ... lens makes light diverge.
8 Objects which absorb or reflect light.
9 Light is blocked by an obstacle and it forms...
10 It is a form of energy which enables us to see.
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