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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?
What can we see only because of light?
What can we see only because of light?
Which committee gave approval to prescribe this textbook?
Which committee gave approval to prescribe this textbook?
How can the digital textbook be obtained?
How can the digital textbook be obtained?
Where can the Q. R. Code for the digital textbook be found?
Where can the Q. R. Code for the digital textbook be found?
Where can the audio-visual teaching-learning material be accessed?
Where can the audio-visual teaching-learning material be accessed?
When was the first edition of this textbook published?
When was the first edition of this textbook published?
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