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

question 26

Multiple Choice

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

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