In Young's double slit experiment, the fringe width is found to be 0.4 mm. If the whole apparatus is immersed in water of refractive index 4/3, without disturbing the geometrical arrangement, the new fringe width will be (a) 0.30 mm (b) 0.40 mm (c) 0.53 mm (d) 450 microns

Answer: (a). In a medium β' = (β)/(μ). β' = (0.4)/(4/3) = 0.30 mm So the answer is (a) 0.30 mm.

In Young's double slit experiment, the fringe width is found to be… | NEET 1990 (AIPMT)

Q73NEET 1990 · AIPMTEasy

YDSE: Film, Medium & Two Wavelengths

In Young's double slit experiment, the fringe width is found to be 0.4 mm. If the whole apparatus is immersed in water of refractive index $\frac{4}{3}$ , without disturbing the geometrical arrangement, the new fringe width will be

Show answer and solution

Answer: (a)

In a medium $\beta' = \frac{\beta}{\mu}$ .
$\beta' = \frac{0.4}{4/3} = 0.30$ mm
So the answer is (a) 0.30 mm.

Report a mistake

More questions on YDSE: Film, Medium & Two Wavelengths

The thickness of a plate (refractive index μ) which will produce a change in optical path…MHT CET 2026 (14 May, Shift 1)
If Young's double slit experiment is performed in waterMHT CET 2026 (14 May, Shift 2)
A double slit experiment is immersed in water of refractive index 1.33. The slit…MHT CET 2026 (12 May, Shift 2)
A double slit experiment is immersed in water of refractive index 1.33. The slit…MHT CET 2026 (15 Apr, Shift 2)
In Young's double slit experiment, the angular width of a fringe is found to be 0.2° on a…MHT CET 2026 (13 Apr, Shift 1)
In Young's double slit experiment, the fringe width of the interference pattern produced…JEE Main 2026 (5 Apr, Shift 1)
In the Young's double slit experiment, when a glass plate of thickness 't' is introduced…MHT CET 2026 (20 May, Shift 1)
In Young's experiment, one of the slit is covered with a transparent sheet of thickness…MHT CET 2026 (15 May, Shift 1)

YDSE: Film, Medium & Two Wavelengths question from NEET 1990 (AIPMT)

More questions on YDSE: Film, Medium & Two Wavelengths