题目
多重下拉选择题
A candle is located 30 cm in front of a concave spherical mirror having principal focus f = 10 cm, as shown in the diagram below. What is the image distance? [ Select ] 15 cm 0.067 cm 7.5 cm -30 cm What is the magnification? [ Select ] -0.5 x -1.0 x -2.0 x -7.5 x What are the image characteristics? [ Select ] real, reduced, and inverted real, enlarged, and inverted virtual, enlarged, and inverted virtual, reduced, and upright
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标准答案
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思路分析
To analyze the concave mirror problem, I’ll go step by step and apply the standard mirror relations while following the sign convention implied by the answer choices.
First, note the given data: a concave mirror with focal length f = 10 cm and an object (the candle) located 30 cm in front of the mirror. The provided answer options imply using the convention where the object distance is taken as positive (u = +30 cm) and the focal length for a concave mirror is positive (f = +10 cm).
Next, apply the mirror equat......Login to view full explanation登录即可查看完整答案
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