Waves and Light — Test

Question 24 • Physics

Which shows the correct magnification equation?

Answer

the fraction with numerator d sub i and denominator d sub o is equal to negative the fraction with numerator h sub i and denominator d sub o

the fraction with numerator h sub i and denominator h sub o is equal to the fraction with numerator d sub i and denominator d sub o

the fraction with numerator d sub i and denominator d sub o is equal to the fraction with numerator h sub i and denominator d sub o

the fraction with numerator h sub i and denominator h sub o is equal to negative the fraction with numerator d sub i and denominator d sub o

Explanation

The magnification equation for a lens or mirror is m = h_i/h_o = −d_i/d_o. The negative sign indicates that an image is inverted when the object and image distances are positive. Choice D gives this equation: the image-height-to-object-height ratio equals the negative image-distance-to-object-distance ratio.

AI-written and checked against the verified answer.

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