Q1. To find the spring constant $( k )$ of a spring experimentally, a student commits $2 \%$ positive error in the measurement of time and $1 \%$ negative error in measurement of mass. The percentage error in determining value of $k$ is :\\
(1) $5 \%$\\
(2) $1 \%$\\
(3) $3 \%$\\
(4) $4 \%$