MEDIUM
10th Manipur Board
IMPORTANT
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Why do we prefer a convex mirror as a rear-view mirror in vehicles?

Important Questions on Light

EASY
10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 9
The radius of curvature of a spherical mirror is 40 cm. What is its focal length in centimetres?
MEDIUM
10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 10
A concave mirror produces three times magnified real image of an object placed in front of it. Where is the image formed?
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10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 11
You are given a concave mirror, a scale and a screen. How will you determine the height of a tree?
MEDIUM
10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 12
A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal? Why?
MEDIUM
10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 13
Light enters from air to glass having refractive index 1.5. What is the speed of light (in m s-1) in the glass? (The speed of light in vacuum is 3×108 m s-1).
MEDIUM
10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 14
What is refraction of light? Illustrate with example.
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10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 15
What is refractive index of a medium?
MEDIUM
10th Manipur Board
IMPORTANT
Science for Class 10>Chapter 11 - Light>EXERCISE>Q 16
Refractive indices of kerosene and crown glass are 1.44 and 1.52 respectively. In which medium will light propagate faster and how much faster?