Student Login

Home›Chapters›Wave Optics PYQs›YDSE: Fringe Width & Fringe Positions›Question 5

MHT CET 2026 (16 Apr, Shift 1) · YDSE: Fringe Width & Fringe Positions

YDSE: Fringe Width & Fringe Positions question from MHT CET 2026 (16 Apr, Shift 1)

Q5MHT CET 2026 · 16 APR · SHIFT 1Easy

YDSE: Fringe Width & Fringe Positions

In Young's double slit experiment, the fringe width is 0.4 mm. What is the distance between $4$ th dark band and $6$ th bright band on the same side of the interference pattern?

Show answer and solution

Answer: (c)

$n$ th bright: $y = n\beta$ ; $n$ th dark: $y = (n - \frac{1}{2})\beta$
6th bright $= 6\beta$ , 4th dark $= 3.5\beta$
Distance $= 2.5\beta = 2.5\times0.4 = 1.0$ mm, so the answer is (c).

Report a mistake

More questions on YDSE: Fringe Width & Fringe Positions

Two coherent sources P and Q produce interference at a point A on the screen where there…MHT CET 2026 (13 May, Shift 2)
In a certain region of the screen, number of fringes formed is observed to be 8 in…MHT CET 2026 (18 Apr, Shift 1)
Given below are two statements: Statement I: In a Young's double slit experiment, the…JEE Main 2026 (21 Jan, Shift 2)
In Young's double slit experiment, following figure shows that Q is the position of…MHT CET 2026 (13 Apr, Shift 2)
In double slit experiment, the angular width of the fringes is 0.20° for sodium light ( λ…MHT CET 2026 (15 May, Shift 1)
In Young's double slit experiment the wavelength of light used is 6000 Å, the screen is…MHT CET 2025 (23 Apr, Shift 1)
In a Young's double slit experiment, the slits are separated by 0.2 mm. If the slits…JEE Main 2025 (4 Apr, Shift 1)
Given below are two statements. One is labelled as Assertion (A) and the other is…JEE Main 2025 (22 Jan, Shift 2)