1for 2 i think b...
1)A:Negative work is done on water vapor in air molecules that ocndense on outside of glass of cold water
R:Temperature of condensing molecules is getting decreased due to condensation
2)A:A flywheel is a disc shaped body of low moment of inertia which is used in machines to facilitate smooth change of angular velocities
R:For eg. in machines carrying passengers,a smooth transition(rather than abrupt) of angular velocities is reqd.
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7 Answers
11) A= False
R= true
since their volume decreases work done by the vapors is -ve bu the work done on them is +ve .
49see no 2 if the moment of inertia was low then for any torque the change in angular velocity would be abrupt.....so the two statements don match each other...and either must be wrong...so???
i'm not much conversant with assertion reason...so will someone discourse the option part...n verify if i am wrong???[1][1]