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Worksheetsoptical phenomena
Total questions: 9
Worksheet time: 9mins
Why is the spectrum of light seperated into its components of colour when white light is directed to a prism?
The different colours in the white light bend away from the normal line at different angles when entering prism
The different colours in the white light bend towards the normal line at different angles when entering prism
The different colours in the white light bend away from the normal at same speed to each other when entering prism
The different colours in the white light bend towards the normal at same speed to each other when entering prism
A Rainbow is formed due to
reflection
refraction
both refraction and reflection
Magic Leprechauns
When a rainbow is formed the sun is
behind you
in front of you
directly overhead
to the side of you
What is a Mirage?
image of the sky may appear to come from the ground, resembling water
image of the water may appear to come from the Sky, resembling water
What happens to light during total internal reflection?
The light reflects back into the original medium at the same angle.
The light refracts closer to the normal line.
The light refracts farther away from the normal line.
The light reflects at the angle it would have refracted at.
When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,
total internal reflection occurs.
angle of refraction is equal to 90 degree.
light is refracted out
light travel in straight line
What happens to the speed of light in a more optically dense medium?
it slows down
it speeds up
stays the same because all light travels at the speed of light
What is the refractive index of a fibre optic pipe if the critical angle is 30 degree?
Outside is air.
2.0
1.7
2.4
