Physics · PYQ NEET UG 2023
हिन्दीFor Young's double slit experiment, two statements are given below: Statement I : If screen is moved away from the plane of slits, angular separation of the fringes remains constant. Statement II : If the monochromatic source is replaced by another monochromatic source of larger wavelength, the angular separation of fringes decreases. In the light of the above statements, choose the correct answer from the options given below:
View Answer & Solution
Correct answer · Option C
Statement I is true but Statement II is false.
Explanation
Angular fringe width \( \theta = \frac{\lambda}{d} \). Statement I is true since \( \theta \) is independent of screen distance. Statement II is false because larger wavelength increases angular separation.