It’s night and you’ve accidentally dropped your keys in a swimming pool. Using a flashlight, you locate the keys at the bottom of the pool. The light shines on the key on the bottom of the pool, when the flashlight is held 1.2 m above the water surface and is directed at the surface a horizontal distance of 1.5 m from the edge. If the water here is 4.0 m deep, how far is the key from the edge of the pool?
Refraction of Light
Refraction is a change in the direction of light rays when they travel from one medium to another. It is the bending of light when it goes through different media.
Angle of Refraction
Light is considered by many scientists to have dual nature, both particle nature and wave nature. First, Particle nature is one in which we consider a stream of packets of energy called photons. Second, Wave nature is considering light as electromagnetic radiation whereas part of it is perceived by humans. Visible spectrum defined by humans lies in a range of 400 to 700 nm wavelengths.
Index of Refraction of Diamond
Diamond, the world’s hardest naturally occurring material and mineral known, is a solid form of the element carbon. The atoms are arranged in a crystal structure called diamond cubic. They exist in a huge variety of colours. Also, they are one of the best conductors of heat and have a very high melting point.
It’s night and you’ve accidentally dropped your keys in a
swimming pool. Using a
flashlight, you locate the keys at the bottom of the pool.
The light shines on the key on
the bottom of the pool, when the flashlight is held 1.2 m
above the water surface and
is directed at the surface a horizontal distance of 1.5 m
from the edge.
If the water here is 4.0 m deep, how far is the key from
the edge of the pool?
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