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Light Reflection and Refraction
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19/08/2021 7:04 pm
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Which type of lens is : (a) a converging lens, and which is (b) a diverging lens?
Explain your answer with diagrams.
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19/08/2021 7:08 pm
(a) A convex lens is a converging lens because it converges a parallel beam of light rays passing through it at its focus.
Figure: A convex lens converges (brings closer) a parallel beam of light rays to a point F on its other side (right side).
(b) A concave lens is a diverging lens because it diverges the parallel beam of rays passing through it.
Figure: A concave lens diverges (spreads out) a parallel beam of light rays.