The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in

The physical quantity which is not a unit of energy is

The mass of a box is 2.3 g. Two gold pieces, each of mass 0.035 g, are placed in it. The total mass of the box and gold pieces is

SI unit of permittivity is

If the acceleration due to gravity is 10$\;{\rm{m}}{{\rm{s}}^{ - 2}}$ and the units of length and time are changed in kilometer and hour respectively, the numerical value of acceleration is

Which of the following is not equal to watt

In an experiment the angles are required to be measured using an instrument. 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is half-a-degree $\left( { = 0.5^\circ } \right),$ then the least count of the instrument is

If the speed $v$ of transverse waves on a stretched string depends on the tension $T$ in the string and the mass per unit length $μ$ of the string, which of the following is dimensionally consistent?

A sextant is used to measure

Density of liquid in CGS system is $0.625{\rm{\;\;g\;c}}{{\rm{m}}^{ - 3}}.$. What is its magnitude in SI system?

A physical quantity is measured and its value is found to be nu where where n= numerical value and u= unit. Then which of the following relations is true