Science, asked by intelligento7666, 10 months ago

एक गोलीय दर्पण की वक्रता-त्रिज्या 20 cm है । इसकी फोकस दूरी क्या होगी ?

Answers

Answered by Anonymous
6

Answer:

f =  \frac{r}{2 }  \\ f =  \frac{20}{2} \\ f = 10  \: cm

hope it helps you

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