Student Login

Home›Chapters›Wave Optics PYQs›Biprism, Thin Films & Other Devices›Question 13

MHT CET 2024 (15 May, Shift 1) · Biprism, Thin Films & Other Devices

Biprism, Thin Films & Other Devices question from MHT CET 2024 (15 May, Shift 1)

Q13MHT CET 2024 · 15 MAY · SHIFT 1Easy

Biprism, Thin Films & Other Devices

In biprism experiment, the fringe width is 0.6 mm. The distance between $6$ th dark fringe and $8$ th bright fringe on the same side of central bright fringe is

Show answer and solution

Answer: (c)

$n$ th dark fringe: $y = (2n-1)\frac{\beta}{2}$ , so 6th dark at $5.5\beta$ .
8th bright fringe at $8\beta$ .
Distance $= 8\beta - 5.5\beta = 2.5\beta = 2.5 \times 0.6 = 1.5\ \text{mm}$ .
So the answer is (c) 1.5 mm.

Report a mistake

More questions on Biprism, Thin Films & Other Devices

In a biprism experiment, monochromatic light of wavelength ' λ ' is used. The distance…MHT CET 2024 (4 May, Shift 2)
In biprism experiment, if 5 th bright band with wavelength λ₁ coincides with 6 th dark…MHT CET 2024 (10 May, Shift 1)
A parallel beam of light of intensity I₀ is incident on a glass plate, 25% of light is…MHT CET 2024 (4 May, Shift 2)
In a biprism experiment, monochromatic light of wavelength ' λ ' is used. The distance…MHT CET 2023 (13 May, Shift 1)
In two separate setups for Biprism experiment using same wavelength, fringes of equal…MHT CET 2023 (12 May, Shift 1)
In biprism experiment, if 5 th bright band with wavelength λ₁' coincides with 6 th dark…MHT CET 2023 (11 May, Shift 1)
In the interference experiment using a biprism, the distance of the slits from the screen…MHT CET 2021 (23 Sep, Shift 1)
In biprism experiment, 21 fringes are observed in a given region using light of…MHT CET 2021 (21 Sep, Shift 1)