A compound microscope has a numerical aperture given by NA = μ sin θ . The micro | TestHub

PhysicsMediummultiple choice

A compound microscope has a numerical aperture given by $NA = μ sin θ$ . The microscope is used to resolve two point objects using light of wavelength $λ$ . Which of the following statements are correct?

Options:(select one or more)

Answer:

A, B, D

Solution:

$d_{min} = \frac{0.61 λ}{μ sin θ}$

(A) $d_{min} \propto λ$ : correct

(B) oil has $μ > 1$ , so $d_{min}$ decreases and resolving power increases: correct

(C) frequency doubled, so $λ$ halves and resolving power doubles: incorrect

(D) $d_{min}$ has no focal length term: correct

Options (A), (B), (D)

Stream:JEESubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

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Physics - Wave Optics Question with Solution | TestHub

Options:(select one or more)

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