MEDIUM
9th Tamil Nadu Board
IMPORTANT
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If an object is placed at the focus of a concave mirror, where is the image formed?

Important Questions on Light

MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vi
Why does a ray of light bend when it travels from one medium to another?
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vi
What is the speed of light in vacuum?
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vi
Concave mirrors are used by dentists to examine teeth. Why?
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vii

Complete the diagram to show how a concave mirror forms the image of the object. What is the nature of the image?

Question Image

MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vii
Pick out the concave and convex mirrors from the following and tabulate them.
Rear-view mirror, Dentist’s mirror, Torch-light mirror, Mirrors in shopping malls, Make-up mirror.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vii
State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vii
What is meant by magnification? Write its expression. What is its sign for real image and virtual image?
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 6 - Light>textbook exercises>Q vii
Write the spherical mirror formula and explain the meaning of each symbol used in it.