Physical Quantities

What is the relative magnetic Permeability of aluminium? ${\mu }_A= 1.256\times {10}^{-6} \mathrm{H}/\mathrm{m}$ , ${\mu }_0= 1.257{ \times 10}^{-6} \mathrm{H}/\mathrm{m}.$

What is relative electric permittivity in glass, if permittivity of glass is ${\epsilon }_g=3.7\times {10}^{-12}?$

permittivity of vacuum ${\epsilon }_0= 8.85\times {10}^{-12}$.

Find the relative quantity of the substance x.

Density of x = $300 kg/m^3$ And reference density = $200 kg/m^3$.

${\mathrm{m}}^3$ is an example of fundamental units.

Consider a particle moving along the positive direction of $X$-axis. The velocity of the particle is given by $\mathrm{v}=\alpha \sqrt{x}$ ($\alpha$ is a positive constant). At time $t=0$, if the particle is located at $x=0$, the time dependence of the velocity and the acceleration of the particle are respectively.

Which of the following pairs of physical quantities have the same dimension?

The quantity which can be measured is known as a physical quantity. They have a numerical magnitude and a unit.

Why length, mass and time are chosen as base quantities in mechanics?

Write the fundamental unit of amount of substance.

Write the fundamental unit of electric current.

A vehicle moving with a speed of $18 \mathrm{km} {\mathrm{h}}^{-1}$covers _____ $\mathrm{m}$ in $1 \mathrm{s}$

Note:In stating numerical answers, take care of significant figures.

The fundamental unit of mass is kilogram which is the mass of a platinum-iridium cylinder kept at the International Bureau of Weights and Measures near Paris in France.

The quantity which can be measured is known as a physical quantity. They have a numerical magnitude and a unit.

Second is an example of fundamental units.

Time is an example of fundamental quantities.

Select the derived unit from the options.

Select the fundamental unit from the options.

Select the derived quantity from the options.

Select the fundamental quantity from the options.

According to metric system, how many fundamental units are there?