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| अव ५ ।।न तक गोलीय दर्पण की वक्रता त्रिज्या 20 cm है। इसकी फोकस दरी क्या।। होगी?The radius of curvature of a spherical mirror is 20 cm. What is itsfocal length? |
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Answer» focal length F = R/2F = 20/2F = 10 cm. ANS.. focal length f=R/2f=20/2f=10cm.Ans... 10 cm is the correct answer of the given |
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