The $SI$ unit of universal gas constant is
What is fundamental quantity ? What is derived quantity ?
If $x = a/t + b/{t^2}+c,$, where $x$ is the distance travelled by the body in metres while $t$ is the time in seconds, then the units of $b$ are
How many wavelength of $K{r^{86}}$ are there in one metre
Which of the following is not the unit of energy