The ratio of intensities at two points P and Q on the screen in a Young’s double slit experiment where phase difference between two wave of same amplitude are and , respectively are [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.
The ratio of intensities at two points P and Q on the screen in a Young’s double slit experiment where phase difference between two wave of same amplitude are $π / 3$ and $π / 2$ , respectively are [2023]

1 1 : 3

2 3 : 1

3 3 : 2

4 2 : 3

Ans.
(3)

$I_{net} = I_{1} + I_{2} + 2 \sqrt{I_{1} I_{2}} \cos ϕ$

$= I_{0} + I_{0} + 2 I_{0} \cos \frac{π}{3}$

$= 2 I_{0} + 2 I_{0} + \frac{1}{2} = 3 I_{0}$

$I_{net} = I_{0} + I_{0} + 2 I_{0} \cos 90 ° = 2 I_{0}$

$Ratio = \frac{3}{2}$

Want Us to Email you About Special Offers & Updates?