QJEEM18Pha5ca: JEE Main 2018 Physics - Class 12 JEEM18Pha5ca Solution: Light of wavelength 550 n m falls normally on a slit of width…

Question

Verified Solution • 2025–26 Session moderate

Light of wavelength

550

n m

falls normally on a slit of width

22.0 \times 10^{- 5}

c m .

The angular position of the second minima from the central maximum will (in radians) :

Accepted Answer

Angular position of n^th minima from central maxima,

sin

θ

=

\frac{n λ}{a}

here n = 2

∴

sin

θ

=

\frac{2 \times 550 \times 10^{- 9}}{22 \times 10^{- 5}}

=

\frac{1}{2}

∴

θ

=

\frac{π}{6}

rad.

Step-by-Step Verified Solution