गोलीय दर्पण की वक्रता-त्रिज्या 10 cm है। इसका फोकसांतर कितना होगा? Goliye Darpan Ki Vakrta Trijya 10cm Hai. Iska Phoksantar Kitna Hoga?
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गोलीय दर्पण की वक्रता-त्रिज्या 10 cm है। इसका फोकसांतर कितना होगा? Goliye Darpan Ki Vakrta Trijya 10cm Hai. Iska Phoksantar Kitna Hoga?

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फोकसांतर (Focal Length) : 1/2 × त्रिज्या = 1/2 x 10cm = 5cm.

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