A) Will not be there
B) Will not be there if the intensity of light reaching the screen from \[{{S}_{1}}\] and \[{{S}_{2}}\] are equal.
C) Will be there under all circumstances
D) We will have only the central fringe
Correct Answer: B
Solution :
On the screen, we have four amplitudes pair wise coherent. \[({{A}_{1}}+{{A}_{2}})+({{A}_{3}}+{{A}_{4}})={{A}_{12}}+{{A}_{34}}\] However, if \[{{A}_{12}}\] and \[{{A}_{34}}\] have equal magnitude because of random phase of \[{{A}_{12}}\] and \[{{A}_{34}},\] no fringes will be seen.
You need to login to perform this action.
You will be redirected in
3 sec
