The time taken by an electron to go from ground state to excited state is one shake (one shake = ${10^{ - 8}}$ s) this time in nanosecond will be

If the unit of force and length each be increased by four times, then the unit of energy is increased by

SI unit of electric intensity is

The surface tension of a liquid is 70 dyne/cm, in MKS system value is

Which of the following units denotes the dimensions $\left[ {{\rm{M}}{{\rm{L}}^2}/{{\rm{Q}}^2}} \right],$, where Q denotes the electric charge?

Precision in measurement depends on

One slug is equivalent to 14.6 kg. A force of 10 pound is applied on a body of 1 kg. The acceleration of the body is

If K denotes coefficient of thermal conductivity, d the density and c the specific heat, the unit of X, where X=K/dc will be

Which of the following is not the unit of energy

Temperature can be expressed as a derived quantity in terms of any of the following

If the velocity ($v$), acceleration ($a$), and time ($t$) are related by an equation $v = at + bt^2$, what are the dimensions of $b$?