MEDIUM
7th CBSE
IMPORTANT
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Draw labelled diagrams to show the principal focus and centre of curvature in lenses.

Important Questions on Light

MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 5

Write the differences between 

Real and virtual images

MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 5

Write the differences between

Converging and diverging mirrors

MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 5

Write the differences between concave and convex lenses

MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 1
An optician's eye chart is fixed 1.5 m behind the eyes of a patient looking into the mirror placed 9 m in front of him. Find the distance of the eye chart as seen by patient's eye.
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 2

Observe the given diagram and answer the following:

Complete the figure to show the path of the ray after it hits the surface of mirror AB.

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EASY
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 2

Observe the given diagram and answer the following:

Find the angle of incidence at AB.

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EASY
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 2

Observe the given diagram and answer the following:

The angle of reflection at BC is ____ °.

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MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 4 - Light>EVALUATE>Q 3
A girl with a face 5 cm wide stands 2 m from a plane mirror. Where is her image formed? How wide is the image of her face? If she walks towards mirror at 2 m/s, at what speed does her image approach her?