10 questions🇬🇧English
🔦 Reflection & Refraction – Year 8
Physics · Year 8 (KS3) — practise the law of reflection, how light refracts and why objects appear coloured
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Questions
A ray of light hits a plane mirror with an angle of incidence of 35°. What is the angle of reflection?
70°
35°
55°
145°
20s
In ray diagrams for reflection and refraction, what is the normal?
A line from the light source to the eye
A line at 90° to the surface where the ray hits
A line drawn along the surface of the mirror
The ray of light that bounces off the mirror
20s
What is the name for white light splitting into a spectrum of colours when it passes through a prism?
Reflection
Dispersion
Absorption
Diffusion
20s
A ray hits a plane mirror at 30° to the mirror's surface. What is the angle of reflection?
60°
120°
90°
30°
30s
A ray of light travels from air into a glass block at an angle. What happens to it?
It slows down and bends away from the normal
It speeds up and bends towards the normal
It speeds up and bends away from the normal
It slows down and bends towards the normal
30s
A ray of light enters a glass block along the normal, with an angle of incidence of 0°. What happens to the ray?
It passes straight through without bending
It bends away from the normal
It bends towards the normal
It is reflected straight back
30s
Why does a red apple look red in white light?
It reflects red light and absorbs the other colours
It gives out its own red light
It refracts white light into red light
It absorbs red light and reflects the other colours
30s
A pure red T-shirt is lit only by blue light in a dark room. What colour does it appear?
Black
Blue
Red
Purple
30s
A ray of light passes from glass out into air at an angle. What happens to it?
It slows down and bends away from the normal
It slows down and bends towards the normal
It speeds up and bends away from the normal
It speeds up and bends towards the normal
30s
When white light passes through a glass prism, which colour is refracted the most?
Red
Violet
Green
Yellow
30s