एक लैंस की क्षमता -4.5D है, इस लैंस की फोकस दूरी क्या होगी
Answers
Answered by
0
Answer:
0.22
Explanation:
p=1/f in metre
p=1/4.5
p=
10/45
p=2/9
p=0.22m
Answered by
0
Answer:
power=-4.5D
we know-power=1/focal length
-4.5=1/fl
fl=1/4.5
fl=0.2
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