Scenario W3 The ray model of light 5) (3 points) A point light is circle on the

Question

Scenario W3 The ray model of light 5) (3 points) A point light is circle on the surface of the water through source of light is positioned 20.0 m below the surface of a lake. What is the diameter of the largest which light can emerge into the air? The index of refraction of water is 1.33. A) 20.0m B) 45.6m C) 37.0m D) 97.4 m 6) A child looks at a fish in a fish tank. The fish looks back at the child. The fish is 10 cm from the surface of t the tank surface does the image of the fish appear to the child? Ignore the glass. n 1.33 for water A) 5 cm B) 7.5 cm C) 10 cm D) 13.3 cm Short Answer (6 points) An object that is 4.00 cm tall is placed 10.0 cm in front of a convex mirror having a focal length of 20.0 cm. Find i) the image height il) The image location. Do this in two ways a) By calculating the values. b) By doing a ray tracing on the provided graph paper. (one significant figure of precision is fine for this) c) Is the image real or virtual?

Explanation / Answer

5) Radius, r = 20*tan C

Where, C is critical angle

By using Snell law,

1.33*sin C = 1*sin 90degree

sin C = 1/1.33

C = arcsin(1/1.33) = 48.75 degree

Radius = 20*tan C

= 20* tan C   

= 20*tan 48.75 degress

= 19.56 m

Radius = 19.56

Diameter = 2*19.56 = 39.12 m

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