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Question

The equivalent power of three identical convex lenses when placed in contact is 253D. Then focal length of each lens is

जब एक जैसे तीन उत्तल लेन्सों को सम्पर्क में रखा जाता है, तब इन लेन्सों की तुल्य क्षमता 253D है। तब प्रत्येक लेन्स की फोकस दूरी है

A
4 cm
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B
24 cm
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C
8 cm
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D
36 cm
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Solution

The correct option is D 36 cm
Solution

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