14. A concave mirror is to form an image of the filament of headlight lamp on a screen 4 m from the mirror. The filament is 5 mm high, and the image is to be 40 cm high. What should be the radius of curvature of the mirror? A. 7.76 cm B. 5.99 cm C. 10.03 cm D 9.88 cm

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A: This problem can be solved using conservation of energy concept.

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Q: Answer B is saying it is wrong.

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