Question

A student was told that a drawing of a bacterial cell had been magnified 30000 times. The length of the drawing was 45mm. What was the actual length of the bacterium?​

Answer 1

Answer:

1.5 microns

Explanation:

Size of the drawing = Actual length of bacterium × magnification.

Size of drawing = 45 mm = 45× 10^-3 m

Magnification = 30000.

Actual length of bacteria =

$\frac{45 \times {10}^{ - 3} m }{30000} \: = \: \frac{45 \times {10}^{ - 3} m }{3 \times {10}^{4} } \\ = 1.5 \times {10}^{ - 6} m$

= 1.5 micro metres or microns.