5. The mirror which is used by an optician while testing eye-sight of a patient is
(a) Concave mirror
(b) Convex mirror
(c) Plane mirror
(d) None of these.
6. A ray of light goes from water to air. Which of the following is correct for this ray?
(a) Zi=2
(6) Li>Lr
(c) Li</
(d) Can't predict
flicht passes from one
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5.The mirror which is used by an optician while testing eye-sight of a patient is CONVEX MIRROR
6.What happens is that light slows down when it passes from the less dense air into the denser glass or water. This slowing down of the ray of light also causes the ray of light to change direction. It is the change in the speed of the light that causes refraction.
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