Heat incident x J, heat reflected plus transmitted y J: absorption coefficient

1. A.
   $\frac{x}{y}$
2. B.
   $\frac{y}{x}$
3. C.
   $\frac{x-y}{x}$
4. D.
   $\frac{y-x}{x}$

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1. A.
   $\dfrac{x}{y}$
2. B.
   $\dfrac{x - y}{x}$
3. C.
   $\dfrac{y}{x - y}$
4. D.
   $\dfrac{x}{y - x}$

Tap an option to check your answer.