1
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
If the source of light used in a Young's double slit experiment is changed from red to violet :
2
JEE Main 2021 (Online) 24th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
In a Young's double slit experiment, the width of the one of the slit is three times the other slit. The amplitude of the light coming from a slit is proportional to the slit-width. Find the ratio of the maximum to the minimum intensity in the interference pattern.
3
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
In the figure below, P and Q are two equally intense coherent sources emitting radiation of
wavelength 20 m. The separation between P and Q is 5 m and the phase of P is ahead of that of Q
by 90o. A, B and C are three distinct points of observation, each equidistant from the midpoint of
PQ. The intensities of radiation at A, B, C will be in the ratio :
![JEE Main 2020 (Online) 6th September Morning Slot Physics - Wave Optics Question 78 English](https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1liynk1gs/fbcf27b4-50d2-4dc7-af71-405c55b5d8fc/4824eac0-0c50-11ee-ac20-219512b21619/file-6y3zli1liynk1ja.png?format=png)
![JEE Main 2020 (Online) 6th September Morning Slot Physics - Wave Optics Question 78 English](https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1liynk1gs/fbcf27b4-50d2-4dc7-af71-405c55b5d8fc/4824eac0-0c50-11ee-ac20-219512b21619/file-6y3zli1liynk1ja.png?format=png)
4
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Two coherent sources of sound, S1 and S2,
produce sound waves of the same wavelength,
$$\lambda $$ = 1 m, in phase. S1 and S2 are placed 1.5 m
apart (see fig). A listener, located at L, directly
in front of S2 finds that the intensity is at a
minimum
when he is 2 m away from S2. The listener moves away from S1, keeping his distance from S2 fixed. The adjacent maximum of intensity is observed when the listener is at a distance d from S1. Then, d is :![JEE Main 2020 (Online) 5th September Evening Slot Physics - Wave Optics Question 79 English](https://imagex.cdn.examgoal.net/jgy2xukfl4hvfp/18f334a5-ea02-41bc-8412-d0f4858a2f99/1e31b950-00c3-11eb-8293-3b6cc591631c/file-jgy2xukfl4hvfq-390w.png)
when he is 2 m away from S2. The listener moves away from S1, keeping his distance from S2 fixed. The adjacent maximum of intensity is observed when the listener is at a distance d from S1. Then, d is :
![JEE Main 2020 (Online) 5th September Evening Slot Physics - Wave Optics Question 79 English](https://imagex.cdn.examgoal.net/jgy2xukfl4hvfp/18f334a5-ea02-41bc-8412-d0f4858a2f99/1e31b950-00c3-11eb-8293-3b6cc591631c/file-jgy2xukfl4hvfq-390w.png)
Questions Asked from Wave Optics (MCQ (Single Correct Answer))
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