Solve the Problem. -A Reflecting Telescope Contains a Mirror Shaped Like a Paraboloid

question 65

Multiple Choice

Solve the problem.
-A reflecting telescope contains a mirror shaped like a paraboloid of revolution. If the mirror is 24 inches across at its opening and is 4 feet deep, where will the light be concentrated?

• A) 0.1 in. from the vertex
• B) 10.1 in. from the vertex
• C) 0.2 in. from the vertex
• D) 0.8 in. from the vertex

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