A designer wants to create a device that spreads light from a small bulb to illuminate a wide area uniformly. Which lens should be used and why?

Question

A designer wants to create a device that spreads light from a small bulb to illuminate a wide area uniformly. Which lens should be used and why? — Exam MCQ

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D. A concave lens, because it diverges light rays outward — A moving vehicle tends to continue in its original direction when its direction is suddenly changed. This is inertia of direction, and greater mass means greater inertia.

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A. A plane glass, because it transmits light without bending

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B. A prism, because it bends light at an angle

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C. A convex lens, because it converges light rays

A designer wants to create a device that spreads light from a small bulb to illuminate a wide area uniformly. Which lens should be used and why?

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