KEAM - 2012 Questions

Question: 1

The displacement of a particle moving along x-axis with respect to time t is $x = at + b t ^ 2 - c t ^ 3$. The dimensions of c are

Question: 2

If the time period of oscillation of a pendulum is measured as 2.5 second using a stop watch with the least count $\frac{1}{2}$ second, then the permissible error in the measurement is