Question

What is the value of $1\mu$ (micron) in $\mathop A\limits^\circ$ ?
A. ${10^{ - 4}}$
B. ${10^4}$
C. ${10^5}$
D. ${10^6}$

Answer 1

Hint : To solve this question, first we will find the common link between both the given quantities, micron and Angstrom, then we will write the equation of both related to the metre and finally resemble both the equations to find the conclusion.

Complete Step By Step Answer:
In this question, first we have to find the relation between micron and the Angstrom or in simple words, find the common link between them.
As we study the concept of the micron quantity:
$1\mu = {10^{ - 6}}m$
1 micron is equal to the ${10^{ - 6}}metre$ .
Now, according to the concept of Angstrom quantity:
$1\mathop A\limits^\circ = {10^{ - 10}}m$
1 Angstrom is equal to the ${10^{ - 10}}metre$ .
As we can see that both the quantities micron and Angstrom are related to the metre unit.
So, if we relate both the upper equations, then we get:
$1\mu = {10^4}\mathop A\limits^\circ$
So, the value of $1\mu$ (micron) in $\mathop A\limits^\circ$ is ${10^4}\mathop A\limits^\circ$ .
Hence, the correct option is B. ${10^4}$ .

Note :
We can do the reverse unit conversion from micron to angstrom, or enter any two units below: An angstrom is a non-SI unit of length equal to ${10^{ - 10}}metre$ , $0.1{\text{ }}nanometres$ or $100{\text{ }}picometres$ .