A single slit of width a is illuminated by a monochromatic light of wavelength 600 nm. The value of for which first minimum appears at on the screen will be [2023]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
A single slit of width a is illuminated by a monochromatic light of wavelength 600 nm. The value of $' a'$ for which first minimum appears at $θ = 30 °$ on the screen will be [2023]

1 0.6 µm

2 1.2 µm

3 1.8 µm

4 3 µm

Ans.
(2)

As for first minima

$\sin θ = λ \Rightarrow a \sin 30 ° = 600 \times 10^{- 9}$

$\Rightarrow a = 1200 \times 10^{- 9} m \Rightarrow a = 1.2 μ m$

Want Us to Email you About Special Offers & Updates?