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Light — PHYSICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9PHYSICSLight3 Marks
Question
Give two uses of
1. convex mirror
2. concave mirror.
✓

Answer

(i) Two uses of convex mirror are:
(a) It is used as a rear view mirror in automobile to see the traffic behind.
(b) It is used as reflector for street light bulbs.
(ii) Two uses of concave mirror are:
(a) Concave mirror is used as A Reflector in head lights of cars and in search light. The source of light (bulb) is placed at the principal focus and the reflector forms parallel beam of light.
(b) For doctors to examine throat, ear, nose and eyes, light is focused with the help of concave mirror.

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