1.

How much mass has to be converted into energy to produce electric power of 500 MW for one hour ?

Answer»

`2XX10^(-5)` kg
`1XX10^(-5)` kg
`3xx10^(-5)` kg
`4xx10^(-5)` kg

SOLUTION :Here, P=500 MW=`5xx10^8` W,t=1 h=3600 s
Energy PRODUCED , E=P x t = `5xx10^8xx3600=18xx10^11` J
As `E=mc^2`
`therefore m=E/c^2=(18xx10^11)/((3xx10^8)^2)=(18xx10^11)/(9xx10^16)=2xx10^(-5)` kg


Discussion

No Comment Found

Related InterviewSolutions