5) a) An underwater diver sees the sun 50oabove horizontal. How high is the sun above the horizon to afisherman in a boat above the diver? b) A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded inthe afternoon when the sun is 20oabove the horizon. How deep is the pool? c) A light ray travels inside a horizontal plate of glass (n= 1.52), striking its upper surface at an angle ofincidence of 60o. This ray is totally internally reflected at the glass-air boundary. A liquid is then pouredon the top of the glass. What is the largest index of refraction that the liquid could have such that the rayis still totally internally reflected?
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.
5)
a) An underwater diver sees the sun 50oabove horizontal. How high is the sun above the horizon to afisherman in a boat above the diver?
b) A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded inthe afternoon when the sun is 20oabove the horizon. How deep is the pool?
c) A light ray travels inside a horizontal plate of glass (n= 1.52), striking its upper surface at an angle ofincidence of 60o. This ray is totally internally reflected at the glass-air boundary. A liquid is then pouredon the top of the glass. What is the largest index of refraction that the liquid could have such that the rayis still totally internally reflected?
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