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PHYSICS [1 Mark Question Answer]

Light Energ · ICSE STD 8 (ICSE - English Medium). 3 questions.

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[1 Mark Question Answer]

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3 questions · timed · auto-graded

Question 11 Mark
State the kind of mirror used $(a)$ by a dentist, and $(b)$ as a street light reflector.
Answer
$(a)$ A dentist uses CONCAVE MIRROR.
$(b)$ Convex mirror
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Question 21 Mark
Name the mirror which always forms an erect and virtual image. What is the size of the image as compared to that of the object?
Answer
It is CONVEX MIRROR. The size of the image is smaller than the size of the object, but when the object is at infinity the size of image is POINT size.
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Question 31 Mark
What is a spherical mirror?
Answer
Spherical mirror. “A mirror which is made from a part of a hollow sphere is called SPHERICAL MIRROR.
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[1 Mark Question Answer] - PHYSICS STD 8 Questions - Vidyadip