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Physics Question 25 – NEET-UG 2023

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For 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:
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Ninja Strategy•Formula-Based Proportionality

Quickly recall the angular separation formula θ=λd and use its direct proportionality with wavelength and independence from screen distance to evaluate both statements.