The formula for resolving power of a lens is l/2NA (wavelength /2 x numerical aperture). What does this say about resolving power?
A) the smaller the wavelength the greater the resolving power of the lens
B) it is not related to the lens' numerical aperture
C) we can not precisely calculate the resolving power of a lens
D) a larger resolving power is indicative of a better lens

Question

Quizplus · Accepted Answer

The formula shows that the resolving power of a lens is directly proportional to the wavelength and inversely proportional to the numerical aperture. This means that a smaller wavelength (such as blue light with a wavelength of 400 nm) will increase the resolving power of the lens, while a larger numerical aperture will also increase the resolving power. Therefore, option A is the correct choice. Option B is incorrect because the formula clearly states that the numerical aperture is a factor in determining the resolving power, and option C is incorrect because the formula provides a precise calculation for resolving power. Option D may be true, but it is not directly related to the formula.

The Formula for Resolving Power of a Lens Is L/2NA