Show work and answer for question 3 4m wide and filled with water (nwater = 1.33

Question

Show work and answer for question 3

4m wide and filled with water (nwater = 1.33). a) Find the least amount of plastic that was needed to make the pool cover. b) You take the cover off and see a shoe on the bottom of the pool. The shoe appears to be at an angle of degrees relative to the surface of the water. What is the angle of refraction in the water? 3 Thin Lens You are about 6 km from a mountain with a lens that forms an 8cm upright image on the same side of the lens the mountain. You take out a meter stick and measure the image to be about 28cm away from the lens. a) What is the height of the mountain? b) What is the focal length of the lens? c) What is the magnification of the lens?

Explanation / Answer

Part A)

h'/h = -q/p

.08/h = .28/6000

h = 1714 m (1.714 km)

Part B)

First 1/f = 1/p + 1/q

1/f = 1/6000 + 1/-.28

f = -.28 m (-28 cm)

Part C)

M = -q/p = .28/6000

M = 4.67 X 10-5

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