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The power obtained in a reactor using `U^(235)` disintergration is `1000kW`. The mass decay of `U^(235)` per hour is

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The power obtained in a reactor using `U^(235)` disintergration is `1000kW`. The mass decay of `U^(235)` per hour is
A. `1` microgram
B. `10` microgram
C. `20`microgram
D. `40`microgram
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Correct Answer - D
`E = Pt = mc^(2)`
`1000 xx 10^(3) xx 3600 = mxx(3xx10^(8))^(2)`
`m = (36xx10^(8))/(9xx10^(16)) = 4xx10^(-8) kg = 4xx10^(-5)g`
`= 40 xx 10^(-6)g = 40` microgram
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