When magnified 1,000 times by an electron microscope, the image of a certain circular piece of tissue has a diameter of 2 centimeter. The actual diameter of the tissue, in centimeters, is Choose the correct choice from the following
A) 0.005  B) 0.002  C) 0.001  D) 0.0005  E) 0.0002

Rationale: it is very easy if x is the diameter , then the magnified length is 1000 x . ince 1000 x = 2 then x = 2 / 1000 = 0.002 . the answer is b
Answer: B