Q.

In an ancient civilization, the unit of length was half of meter, the unit of mass was double the kilogram and the unit of time was half of second. The ratio of   joule and   the new  unit of energy   is _________

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answer is 2.

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Detailed Solution

Unit of Energy, 1 J =kgm2s-2 (old unit)Now, according to questionNew unit of mass =a=2kgNew unit of length =b=12mNew unit of time =c=12sNew unit of energy =ab2c-2Ratio =New unitOld unit=ab2c-2kgm2s-2=2kgkg12mm212ss-2=2
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In an ancient civilization, the unit of length was half of meter, the unit of mass was double the kilogram and the unit of time was half of second. The ratio of   joule and   the new  unit of energy   is _________