History, asked by tulsiramdawar2, 7 months ago

या 12एक उत्तल लेंस की फोकस दूरी 40 से.मी. है। लेंस की दामता
की गणना कीजिए।

Answers

Answered by guptajitendrabca1

Explanation:

लेंस लेंस की फोकस दूरी =40cm

लेंस की छमता होगी

P= 100/f ( f is distance of focus

p= 100/40

P= 2.5 cm

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