If the error in the measurement of momentum of a particle is (+100%), then the error in the measurement of kinetic energy is
100%
200%
300%
400%
Since, error in measurement of momentum is + 100%
P1=P,P2=2p
K1=p22m,K2=(2p)22m
% in K=K2-K1K1×100
=4-11×100=300%