JEE Main 2016 — Wave Optics Question with Solution
From: JEE Main 2016 (Offline)
Question
The box of a pin hole camera, of length has a hole of radius a. It is assumed that when the hole is illuminated by a parallel beam of light of wavelength the spread of the spot (obtained on the opposite wall of the camera) is the sum of its geometrical spread and the spread due to diffraction. The spot would then have its minimum size (say ) when :
Choose an option
Show full solutionCorrect option: A
Correct answer
A and
Step-by-step explanation
Given geometrical spread
Diffraction spread
The sum
For to be minimum
Diffraction spread
The sum
For to be minimum
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Wave Optics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2016, covering the Wave Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.