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StephenG - Help Ukraine
StephenG - Help Ukraine
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I came across this question

A lightsource of diameter 10cm is placed 2m underneath the surface of a pool, a person 
5m away from the edge of the pool saw a circle of light emitting from the lamp. 
Calculate the maximum diameter of the circle of light seen by the person. 
(Use refractive index = 1.33)

A lightsource of diameter 10cm is placed 2m underneath the surface of a pool, a person 5m away from the edge of the pool saw a circle of light emitting from the lamp. Calculate the maximum diameter of the circle of light seen by the person. (Use refractive index = 1.33)

I figured this would be something similar to that of Snell's Law and drew the diagram below: enter image description here

The answer is indeed about 4.66m, however I am quite puzzled as to how the person could see the entire circular shape of light, given that some rays are travelling away from the person?

I came across this question

A lightsource of diameter 10cm is placed 2m underneath the surface of a pool, a person 
5m away from the edge of the pool saw a circle of light emitting from the lamp. 
Calculate the maximum diameter of the circle of light seen by the person. 
(Use refractive index = 1.33)

I figured this would be something similar to that of Snell's Law and drew the diagram below: enter image description here

The answer is indeed about 4.66m, however I am quite puzzled as to how the person could see the entire circular shape of light, given that some rays are travelling away from the person?

I came across this question

A lightsource of diameter 10cm is placed 2m underneath the surface of a pool, a person 5m away from the edge of the pool saw a circle of light emitting from the lamp. Calculate the maximum diameter of the circle of light seen by the person. (Use refractive index = 1.33)

I figured this would be something similar to that of Snell's Law and drew the diagram below: enter image description here

The answer is indeed about 4.66m, however I am quite puzzled as to how the person could see the entire circular shape of light, given that some rays are travelling away from the person?

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tangolin
tangolin
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Appearance of underwater light source to an observer

I came across this question

A lightsource of diameter 10cm is placed 2m underneath the surface of a pool, a person 
5m away from the edge of the pool saw a circle of light emitting from the lamp. 
Calculate the maximum diameter of the circle of light seen by the person. 
(Use refractive index = 1.33)

I figured this would be something similar to that of Snell's Law and drew the diagram below: enter image description here

The answer is indeed about 4.66m, however I am quite puzzled as to how the person could see the entire circular shape of light, given that some rays are travelling away from the person?