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How far should the object be placed from a concave mirror of focal length 4.8 cm, when the image is to be obtained at a distance of 12 cm from the mirror? 4.8 से . मी . फोकस दूरी वाले अवतल दर्पण से वस्तु को कितनी दूरी पर रखा जाए जब प्रतिबिंब दर्पण से 12 से . मी . की दूरी पर प्राप्त करना हो?

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How far should the object be placed from a concave mirror of focal length 4.8 cm, when the image is to be obtained at a distance of 12 cm from the mirror? 4.8 से . मी . फोकस दूरी वाले अवतल दर्पण से वस्तु को कितनी दूरी पर रखा जाए जब प्रतिबिंब दर्पण से 12 से . मी . की दूरी पर प्राप्त करना हो?






 
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