EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

The law of reflection says that : "When a ray of light is reflected at a surface, the angle of incidence is equal to the angle of reflection". Draw a diagram to indicate how a ray of light is reflected by a flat mirror, and mark the two angles mentioned in the law.

Important Questions on Light

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.1
Write the word AMBULANCE as it would appear when reflected in a plane mirror.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.1
Why is it sometimes written in this way Question Image on the front of the ambulance?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.5
Draw a diagram to show what we mean by the angle of incidence and angle of refraction for a refracted ray of light.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.9
When a ray of light passes from air to glass, is the angle of refraction greater than or less than, the angle of incidence?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.13
Light travels more quickly through water than through glass. Which has the greater refractive index, water or glass?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.15
A solution of sugar in water is found to have a refractive index of 1.38. Calculate the speed of light in the solution. (The speed of light in vacuum is 3×108 ms-1)
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.22
Why must high-purity glass be used for optical fibres used in telecommunications?
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.3
A converging lens has a focal length 5 cm. An object is placed 3 cm from the centre of the lens, on the principal axis. Use your diagram. To determine the distance of the virtual image formed from the lens.
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