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4D History - 4D Statistic

MEREK : power 4d

4D History - 4D Statistic

power 4dAI PowerCinema 4DAIGiven, Power of convex lens=4D. Placed at 40 cm from a wall. To Find, Distance of a candle. Solution, It is given that ,Power = 4D. Then, P = 1f. So, 4 D = 1f

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