If the units of force, energy and velocity are respectively $10\, N, 100\, J, 5\, m/s$, then the units of length, mass and time will be
$10\, m, 5 \,kg, 1\, sec$
$10\, m, 4 \,kg, 2\, sec$
$10\, m, 4 \,kg, 0.5\, sec$
$20\, m, 5 \,kg, 2\, sec$
Which is international unit system ? Which are supplementary quantities ?
The unit of Planck's constant is
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.
The $SI$ unit of momentum is
$Parsec $ is a unit of