As shown in figure, waves with identical wavelengths and amplitudes and which are initially in p...
As shown in figure, waves with identical wavelengths and amplitudes and which 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 math xmlns=http://www.w3.org/1998/Math/MathMLmi mathvariant=normalL/mi/math is math xmlns=http://www.w3.org/1998/Math/MathMLmsubmi mathvariant=normalN/mimn2/mn/msub/math for Ray math xmlns=http://www.w3.org/1998/Math/MathMLmn2/mn/math and math xmlns=http://www.w3.org/1998/Math/MathMLmsubmi mathvariant=normalN/mimn1/mn/msub/math for Ray math xmlns=http://www.w3.org/1998/Math/MathMLmn1/mn/math . In the following table, values of math xmlns=http://www.w3.org/1998/Math/MathMLmsubmi mathvariant=normalN/mimn1/mn/msub/math and math xmlns=http://www.w3.org/1998/Math/MathMLmsubmi mathvariant=normalN/mimn2/mn/msub/math are given for all four situations.
img src=https://penpencil-static-content.s3.ap-south-1.amazonaws.com/5eb393ee95fab7468a79d189/tw7lzr3u0ynwogshb3byh9zn3.png /
The order of the situations according to the intensity of the light at the common point in descending order is
(1) \( I_{3}=I_{4}>I_{2}>I_{1} \)
(2) \( I_{1}>I_{3}=I_{4}>I_{2} \)
(3) \( I_{1}>I_{2}>I_{3}>I_{4} \)
(4) \( I_{2}>I_{3}=I_{4}>I_{1} \)
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