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[" 34If a body of mass "m" has to be tak...

[" 34If a body of mass "m" has to be taken from the surface to the "],[" earth to a height "h=4R" ,then the amount of energy requirec "],[" is "(R=" radius of the earth) "],[[" (a) "mg R," (b) "(mgR)/(5)," (c) "(4mgR)/(5)," (d) "(mgR)/(12)]]

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