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Light Energy — PHYSICS STD 7 — Question

ICSE BoardEnglish MediumSTD 7PHYSICSLight Energy2 Marks
Question
How is a plane mirror made ?
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Answer

To make a plane mirror, a thin piece of glass is taken. One surface of the mirror is made opaque by silvering it. On the top of that, another thin coating of red lead oxide is given which protects the silvering of the mirror.

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