Which of the following are true for a single slit diffraction ? [2026]

Question

Which of the following are true for a single slit diffraction ? [2026]

A. Width of central maxima increases with increase in wavelength keeping slit width constant.
B. Width of central maxima increases with decrease in wavelength keeping slit width constant.
C. Width of central maxima increases with decrease in slit width at constant wavelength.
D. Width of central maxima increases with increase in slit width at constant wavelength.
E. Brightness of central maxima increases for decrease in wavelength at constant slit width.

Smart Achievers · Accepted Answer

(4)

$β_{c m} = \frac{2 λ D}{a}$

$(A) Correct β \propto λ$

$(B) Incorrect$

$(C) Correct β \propto \frac{1}{d}$

$(D) Incorrect$

$(E) Correct$

$Statement A, C & E are correct.$

$No option matching$

Solution

1 A, D, E only

2 B, D only

3 A, D only

4 None of these

Ans.
(4)

$β_{c m} = \frac{2 λ D}{a}$

$(A) Correct β \propto λ$

$(B) Incorrect$

$(C) Correct β \propto \frac{1}{d}$

$(D) Incorrect$

$(E) Correct$

$Statement A, C & E are correct.$

$No option matching$

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