Question

Match the values of Unit in left column with magnitude in right column

Column 1	Column 2
Parsec	${10}^{-10}m$
Light year	$1.496\times {10}^{11}m$
Astronomical unit	${10}^{-15}m$
Micron	$3.086\times {10}^{16}m$
Angstrom	$9.467\times {10}^{15}m$
Fermi	${10}^{-6}m$

Answer 1

S.No.	Unit	Magnitude
1	Parsec	$3.086\times {10}^{16}m$
2	Light year	$9.467\times {10}^{15}m$
3	Astronomical unit	$1.496\times {10}^{11}m$
4	Micron	${10}^{-6}m$
5	Angstrom	${10}^{-10}m$
6	Fermi	${10}^{-15}m$

Parsec:- parsec, unit for expressing distances to stars and galaxies, used by professional astronomers. It represents the distance at which the radius of Earth’s orbit subtends an angle of one second of arc.

Light year :- A light-year is a measurement of distance and not time (as the name might imply). A light-year is the distance a beam of light travels in a single Earth year, which equates to approximately $9.467\times {10}^{15}m$.

Astronomical unit :- a unit of length used in astronomy equal to the mean distance of the earth from the sun or about $1.496\times {10}^{11}m$.

Micron :- The micrometre (international spelling as used by the International Bureau of Weights and Measures), also commonly known as a micron, is an SI derived unit of length equalling ${10}^{-6}m$ (SI standard prefix "micro-" = ${10}^{-6}$); that is, one millionth of a metre.

Angstrom:- The angstrom, also known as the angstrom unit, is a measure of displacement equal to ${10}^{-10}m$. It is sometimes used to express wavelengths of visible light, ultraviolet (UV) light, X rays, and gamma rays.

Fermi:- a unit of length, ${10}^{-15}m$, used in measuring nuclear distances. Symbol: $F$