Biology, asked by Arunsinghdx4089, 10 months ago

गोलीय दर्पण की वक्रता त्रिज्या 20 सेंटीमीटर इस की फोकस अंतर क्या है

Answers

Answered by raghbir445

2

Answer:

10cm

Explanation:

f=R/2

R=20 cm

f=20/2

f=10cm......

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