Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • As shown in arrangement waves with identical wavelengths and amplitudes and that are initially in phase travel through different media, Ray 1 travels through air and Ray 2 through a transparent med

As shown in arrangement waves with identical wavelengths and amplitudes and that are initially in phase travel through different media, Ray 1 travels through air and Ray 2 through a transparent medium for equal length L, in four different situations. In each situation the two rays reach a common point on the screen. The number of wavelengths in length L is N2 for Ray 2 and N1 for Ray 1. In the following table, values of N1 and N2 are given for all four situations, The order of the situations according to the intensity of the light at the common point in descending order is :

Option: 1

I_{3}=I_{4}>I_{2}>I_{1}


Option: 2

I_{1}>I_{3}>I_{4}>I_{2}


Option: 3

I_{1}>I_{2}>I_{3}>I_{4}


Option: 4

I_{2}>I_{3}=I_{4}>I_{1}


Answers (1)

best_answer

In cases I, II, III, IV the path differences are respectively  \frac{\lambda }{2},\lambda,\frac{\lambda }{4}\;\; and \;\;\frac{3\lambda }{4}

\Rightarrow phase differences are respectively   \pi,2\pi,\pi/2,3\pi/2

and intensity is given as  - I= I_{max}\cdot \cos ^{2}\frac{\phi}{2}

\thereforethe intensity in the four cases are   0,I_{max},\frac{I_{max}}{2},\frac{I_{max}}{2} respectively

 

Posted by

vishal kumar

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JoSAA Counselling 2025 LIVE: BTech registration starts at josaa.nic.in for IIT, NIT, IIIT admissions
anam-khan

Kota: 17-year old student from UP preparing for JEE dies of electrocution in hostel
anam-khan

CSAB 2025 counselling dates out for special, supernumerary rounds through JEE Mains

Latest Question