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What is meant by a plane mirror?

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Question

What is meant by a plane mirror?
One Line Answer
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Solution

A smooth, highly polished plane surface is called a plane mirror.
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Images Formed by a Plane Mirrors
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Chapter 6: Light - Reflection of Light [Page 246]

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Frank Physics [English] Class 9 ICSE
Chapter 6 Light
Reflection of Light | Q 30 | Page 246

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What do you mean by a mirror?

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