The International System of Units

Name the physical quantity whose S.I. unit is $\mathrm{J} {\mathrm{C}}^{-1}$. Is it a scalar or a vector quantity?

The density of material in the CGS system of units is $\frac{4g}{{\mathrm{cm}}^3}$. In a system of units in which unit of length is $10 \mathrm{cm}$ and unit of mass is$100 \mathrm{g}$, the value of density of material will be

The density of material in the CGS system of units is  $4 \mathrm{g} {\mathrm{cm}}^{-3}$. In a system of units in which unit of  length is $10 \mathrm{cm}$ and the unit of  mass  is $100 \mathrm{g}$, the value of density of the material will be

The ‘rad’ is the correct unit used to report the measurement of

Convert $20 \mathrm{g} {\mathrm{cm}}^2 {\min }^{-2}$ into $\mathrm{kg} {\mathrm{m}}^2 {\mathrm{s}}^{-2}$ unit.

What is MKSQ system?

Which of the following is the biggest?

What is the solid angle subtended by the moon at any point of the Earth, given the diameter of the moon is $3474 \mathrm{km}$ and its distance from the Earth $3.84\times {10}^8 \mathrm{m}$. 

Give MKS unit for length.

Identify the correct option.

In SI units, $\mathrm{kg} {\mathrm{m}}^2 {\mathrm{s}}^{-2}$ is equivalent to which of the following?

The solid angle subtended by a spherical section of an area $3{\mathrm{cm}}^2$ at the centre of curvature situated symmetrically at a distance of $7\mathrm{cm}$ from the area is nearly equal to

The density of vanadium is $5.96 \mathrm{g} {\mathrm{cm}}^{-3}$. Convert this quantity to $\mathrm{SI}$ unit of $\mathrm{Kg} {\mathrm{m}}^{-3}$.

Find the value of $20$ joule in a system which has $10 \mathrm{cm},1 \mathrm{kg}$ and $\frac{1}{2}$ minute as fundamental units of length, mass and time.

Which of the following is not an SI unit?

The moon's distance from the earth is $3,60,000\mathrm{kms}$ and its diameter subtends an angle of ${31}^{\text{'}}$ at the eye of the observer. Find the diameter of the moon.

A scooterist covers a distance of $3$ kilometres in $5$ minutes. Calculate his speed in:

(a) centimetres per second $\left(\mathrm{cm} {\mathrm{s}}^{-1}\right)$
(b) metres per second $\left(\mathrm{m} {\mathrm{s}}^{-1}\right)$
(c) kilometres per hour $\left(\mathrm{km} {\mathrm{h}}^{-1}\right)$

The density of vanadium is $5.96 \mathrm{g} {\mathrm{cm}}^{-3}$. Convert this quantity to $\mathrm{SI}$ unit of $\mathrm{Kg} {\mathrm{m}}^{-3}$.