In general, visible light cannot be used to resolve an object smaller than the light’s wavelength.?

Question

Suppose a bacterium has a diameter of 0.6 micron. What is the lowest frequency of light that could be used to resolve it? (1 micron = 1 × 10^—6 m)
a)2 × 10^2 s—1
b)5 × 10^2 s—1
c)5 × 10^14 s—1
d)2 × 10^—15 s—1

Answer 1

The answer is "c", 5 x 10^14 / sec.