The sun is 150,000,000 km from earth; its diameter is 1,400,000

km. A student uses a 4.4-cm-diameter lens with f = 10 cm to cast an

image of the sun on a piece of paper. Part A: Where should the paper be placed relative to the lens to get a

sharp image? Express your answer with the appropriate units. Answer: 10 cm Part B: What is the diameter of the image on the paper? Express your answer with the appropriate units. Answer: .93 mm Part C: The intensity of the incoming sunlight is 1050 W/m2. What is the

power of the light captured by the lens? Express your answer with the appropriate units. Answer: 1.6 W Part D: What is the intensity of sunlight in the projected image? Assume

that all of the light captured by the lens is focused into the

image. Express your answer with the appropriate units. I DON’T KNOW THIS ONE Please Help

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