The image of a dust mite from a scanning electron microscope is 1.5×10 to the 2nd millimeters wide. the image is 5×10 to 2nd times life size. how many millimeters wide is the dust mite?

Given that The image of a dust mite from a scanning electron microscope is millimetres wide. And that image is times life size. Now we have to find how many millimetres wide is the dust mite. To find that we just need to divide the the width of dust mite by the scale value of microscope. I mean divide millimetre by

So the answer is given by

Width of the dust mite

Hence final answer is 0.3 milimetre.