Question

A microscope is set so it makes an object appear 4 x 10^2 times larger than its actual size. A virus has a diameter of 2 x 10^-7 meter. How large will the diameter of the virus appear when it is viewed under the microscope?

Answer 1

We know that the actual size of the virus is 2x10^-7 and the scale of microscope is 4x10^2, so we just have to multiply the actual size by the scale:

2x10^-7*4x10^2=8x10^-5 meters

So, the size of the diameter of the virus is 8x10^-5 under the microscope.