defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Physics Optics Diffraction

General expression for resolution power of optical instruments is

1
\(\frac{{d\lambda }}{\lambda }\)
2
\(\frac{\lambda }{{d\lambda }}\)
3
λ dλ
4
\(\frac{1}{{\lambda \;d\lambda }}\)
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