The damping force on an oscillator is directly proportional to the velocity.The units of the constant of proportionality are
$Kg\ ms^{-1}$
$Kg\ ms^{-2}$
$Kg\ s^{-1}$
$Kg\ s$
In a practical unit if the unit of mass becomes double and that of unit of time becomes half, then $8$ joule will be equal to .............. unit of work.
Why do we have different units for the same physical quantity ?
Match List$-I$ with List$-II$.
List$-I$ | List$-II$ |
$(a)$ ${R}_{{H}}$ (Rydberg constant) | $(i)$ ${kg} {m}^{-1} {s}^{-1}$ |
$(b)$ $h$ (Planck's constant) | $(ii)$ ${kg} {m}^{2} {s}^{-1}$ |
$(c)$ $\mu_{{B}}$ (Magnetic field energy density) | $(iii)$ ${m}^{-1}$ |
$(d)$ $\eta$ (coefficient of viscocity) | $(iv)$ ${kg} {m}^{-1} {s}^{-2}$ |
Choose the most appropriate answer from the options given below:
Faraday is the unit of
$\mathrm{VS}$ is unit of which physical quantity ?