2.
एक गोलीय दर्पण की वक्रता त्रिज्या 20 cm है।
इसकी फोकस दूरी क्या होगी?
Answers
Answered by
1
Answer:
10
Explanation:
R=20 F=?
R=
2F, R/2=F
फोकस दूरी = 20/2 = 10 answer
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Answered by
0
Answer:
kjghfhgbhghnhbb
Explanation:
hbgnhnj
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