HARD
Upper Secondary: IGCSE
IMPORTANT
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What is the difference between a real image and a virtual image?

Important Questions on Light

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Look at the ray diagram shown in the Figure. How does it show that the image formed by a converging lens is inverted?
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HARD
Upper Secondary: IGCSE
IMPORTANT
Look at Figure,
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How can you tell from the diagram that the image formed by the magnifying glass is a virtual image?
HARD
Upper Secondary: IGCSE
IMPORTANT
A converging lens has focal length 5 cm. An object is placed 3 cm from the centre of the lens, on the principal axis. Draw an accurate ray diagram to represent this.
HARD
Upper Secondary: IGCSE
IMPORTANT
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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EASY
Upper Secondary: IGCSE
IMPORTANT
Draw a diagram to show how a ray of light is reflected by a plane mirror. Mark the normal and the angles of incidence and reflection. 
EASY
Upper Secondary: IGCSE
IMPORTANT
Write an equation that shows how angle of reflection and angle of incidence are related by the law of reflection. Write the equation both in words and in symbols. 
EASY
Upper Secondary: IGCSE
IMPORTANT
Draw a diagram to show how a ray of light is refracted when it passes from one material to another. Mark the normal and the angles of incidence and refraction.
EASY
Upper Secondary: IGCSE
IMPORTANT
Write an equation relating the refractive index of a material to the speed of light in vacuum and the speed of light in the material.