EASY
8th ICSE
IMPORTANT
Earn 100

Define incident ray, refracted ray, angle of incidence and angle of refraction.

Important Questions on Light Energy

EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B
A ray of light falls normally on a glass slab. What is the angle of incidence?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B
A ray of light travels from a rarer medium to a denser medium. How will it bend?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (i), and the angle of refraction (r).
MEDIUM
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B
The diagram in figure shows a ray of light AO falling on a rectangular glass slab PQRS. Complete the diagram till the ray of light emerges out of the slab. Label on the diagram the incident ray, the refracted ray and the emergent ray.
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EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B

Explain why a coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.

EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B

Explain why a straight stick partly dipped in water obliquely, appears to be bent at the surface of the water.

EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B

Explain why the sun is seen before the sunrise and after the sunset.

MEDIUM
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 5 - Light Energy>TEST YOURSELF>Q B
What is mirage? Give a reason for its formation?