MEDIUM
8th CBSE
IMPORTANT
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What is the relation between the incident ray on a glass slab and the emergent ray?

Important Questions on Refraction and Dispersion of Light

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 4
Which is deviated more by a glass prism - red light or violet light?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 1
Which type of lens is thicker in the middle than at the edge?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 2
What effect does a convex lens have on a parallel rays of light incident on it? In what way is the effect of a concave lens different?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 3
A ray of light passing through a certain point of a lens does not undergo any deviation. What point is this?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 4
What kind of lens always forms a virtual image of an object?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 1
The eye can control the amount of light falling on the retina. Which part of the eye is the responsible for this?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 2
The eye can change the focal length of its lens. Which part of the eye is the responsible for this? How does the changing focal length help us?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 16 - Refraction and Dispersion of Light>ORAL QUESTIONS>Q 3
A person cannot see near objects clearly. What kind of lens should his spectacles have to correct this?