plz tell solve my doubt plzzzx 100 kese aya solve karne mai jab ki formula hota hai p=1/f
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BECAUSE 25 CM DIYA H... JABKI POWER NIKALNE KE LIYE F..... M MA HOTI H..... SO 1/25/100M HO GYA WHICH GIVES 100/25
GIVES 4D
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