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Questions and Answers
Which type of mirror is made by coating the back surface of a flat and smooth glass piece with a thin, reflecting film of aluminium or silver?
Which type of mirror is made by coating the back surface of a flat and smooth glass piece with a thin, reflecting film of aluminium or silver?
- Plane mirror (correct)
- Convex mirror
- Concave mirror
- Cylindrical mirror
What is the substance like lead oxide used for in a mirror?
What is the substance like lead oxide used for in a mirror?
- To make the mirror opaque (correct)
- To make the mirror reflective
- To provide additional strength to the mirror
- To protect the reflecting film
Who is credited with making the first mirror by coating the plane surface of a piece of ordinary glass with silver metal?
Who is credited with making the first mirror by coating the plane surface of a piece of ordinary glass with silver metal?
- Isaac Newton
- Marie Curie
- Justus von Liebig (correct)
- Albert Einstein
What is light?
What is light?
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What can we see only because of light?
What can we see only because of light?
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Which committee gave approval to prescribe this textbook?
Which committee gave approval to prescribe this textbook?
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How can the digital textbook be obtained?
How can the digital textbook be obtained?
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Where can the Q. R. Code for the digital textbook be found?
Where can the Q. R. Code for the digital textbook be found?
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Where can the audio-visual teaching-learning material be accessed?
Where can the audio-visual teaching-learning material be accessed?
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When was the first edition of this textbook published?
When was the first edition of this textbook published?
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