17) 2 ਮੀਟਰ ਫੋਕਸ ਦੂਰੀ ਵਾਲੇ ਕਿਸੇ ਅਵਤਲ ਲੈੱਨਜ਼ ਦੀ ਸ਼ਕਤੀ ਗਿਆਤ ਕਰੋ? Find the power of a concave lens of focal length 2 m? 2 मीटर फोकस दूरी वाले किसी अवतल लेंस की क्षमता ज्ञात कीजिए? *
1) -0.25 D
2) -1.5 D
3) -0.5 D
4) -0.75 D
pls answer bta do koi☹️
Answers
Answered by
5
Answer:
2) -1.5 D is correct answer mate(:
Answered by
8
Answer:
0.5 is right ans
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Explanation:
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