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Question

A convex lens of focal length 50 cm is placed 20 cm in front of a plane mirror. Light from very far away source falls on the lens. The distance of final image from the mirror is

50 cm फोकस दूरी के एक उत्तल लेन्स को एक समतल दर्पण के सामने 20 cm की दूरी पर रखा जाता है। बहुत दूर स्थित स्रोत से प्रकाश, लेन्स पर आपतित होता है। दर्पण से अन्तिम प्रतिबिम्ब की दूरी है

A
253 cm
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B
853 cm
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C
407 cm
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D
803 cm
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Solution

The correct option is B 853 cm
Solution

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