Mirrors — Quiz

Question 7 • Physics

What is the magnification formula?

Answer

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

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

negative the fraction with numerator h sub i and denominator h sub o minus the fraction with numerator d sub i and denominator d sub o is equal to 1

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

For a mirror or thin lens, magnification is defined as the image height divided by the object height: m = h_i/h_o. It is also related to the distances by m = -d_i/d_o, where the negative sign accounts for image orientation. Therefore, the formula is h_i/h_o = -d_i/d_o, which is choice D.

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