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STD 12 - 9. Ray optics abd optical instruments — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 9. Ray optics abd optical instruments4 Marks
MCQ
Two points separated by a distance of $0.1\,mm$ can just be resolved in a microscope when a light of wavelength $6000 Å$ is used. If the light of wavelength $4800Å$ is used this limit of resolution becomes.......$mm$
  • ✓
    $0.08$
  • B
    $0.10$
  • C
    $0.12 $
  • D
    $0.06$
✓

Answer

Correct option: A.
$0.08$
a
( a)Resolving limit
$x \propto \lambda \Rightarrow \frac{{{x_1}}}{{{x_2}}} = \frac{{{\lambda _1}}}{{{\lambda _2}}} \Rightarrow \frac{{0.1}}{{{x_2}}} = \frac{{6000}}{{4800}}$$ \Rightarrow {x_2} = 0.08\;mm$

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