Keywords:
Microscope, scale factor, enlargement, actual length, length to scale
For this case we have a microscope that shows an enlargement scale of objects, 140 times the actual size. Given the actual length of an insect, we want to know the scale length shown by the microscope. So, we have the following equation:
\(Length\ to\ scale = 140 * Actual\ length\)
If the insect has a \(actual\ length = 6mm\), then:
\(Length\ to\ scale = 140 * 6mm\\Length\ to\ scale = 840mm\)
Thus, the microscope will show the insect with a size of 840mm
Answer:
The body length of the insect under the microscope is 840mm
Option D
