A student was told that the actual length of a cell structure is $5\mu m$.
The student was asked to state an equation that can be used to calculate the magnification of an electron micrograph of this cell structure. The student used some of the letters q to u in the equation.
q = the length of the cell structure image on the micrograph in centimetres
r = the length of the cell structure image on the micrograph in millimetres
s = 1000
$t = \frac{1}{5}$
u = 5
Which is the correct equation to calculate the magnification?
1 )
$\frac{q}{s} \times u$
2 )
$q \times s \times t$
3 )
$\frac{r}{s} \times u$
$r \times s \times t$
