How is the interference pattern affected when violet light replaces sodium light? (a) The fringes become brighter. (b) The fringes become faint. (c) Fringewidth decreases. (d) Fringewidth increases.

Answer: (c). β = (λ D)/(d) ∝ λ Violet light has a shorter wavelength than sodium (yellow) light, so β decreases. So the answer is (c).

How is the interference pattern affected when violet light replaces… | MHT CET 2024 (11 May, Shift 2)

Q22MHT CET 2024 · 11 MAY · SHIFT 2Easy

YDSE: Fringe Width & Fringe Positions

How is the interference pattern affected when violet light replaces sodium light?

Show answer and solution

Answer: (c)

$\beta = \frac{\lambda D}{d} \propto \lambda$
Violet light has a shorter wavelength than sodium (yellow) light, so $\beta$ decreases.
So the answer is (c).

In young's double slit experiment, the n th maximum of wavelength λ₁ is at a distance of…MHT CET 2024 (10 May, Shift 1)
In Young's double slit experiment, carried out with light of wavelength 5000 Å, the…JEE Main 2024 (5 Apr, Shift 1)
If the monochromatic source in Young's double slit experiment is replaced by white light…NEET 2024
Sodium light (λ = 6 × 10⁻⁷ m) is used to produce interference pattern. The observed…MHT CET 2024 (15 May, Shift 2)
In Young's double slit experiment, the slits are separated by 0.6 mm and screen is placed…MHT CET 2024 (10 May, Shift 2)
The fringe width in an interference pattern is ' X '. The distance between the sixth dark…MHT CET 2024 (9 May, Shift 2)
In Young's double slit experiment, green light is incident on two slits. The interference…MHT CET 2023 (11 May, Shift 2)
In Young's double slit experiment the separation between the slits is doubled without…MHT CET 2023 (10 May, Shift 1)