Need all parts of this one homework question answered, thank you. Constructive I

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Need all parts of this one homework question answered, thank you.

Constructive Interference Part A Figure 1) shows the interference pattern obtained in a double-slit experiment with light of wavelength ldentify the fringe or fringes that result from the interference of two waves whose path difference differs by exactly 2 Enter the letter(s) indicating the fringe(s) in alphabetical order. For example, if you think that fringes A and C are both correct, enter AC. Hints Submit My Answers Give Up Part B The same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and rep Figure 1 of 1 eated. When in the water, what happens to the interference fringes? Hints They are more closely spaced than in air by a factor of 1.33 They are more widely spaced than in air by a factor of 1.33 They are spaced the same as in air. They are shifted upward They are shifted downward bright fringe central fringe dark fringe Submit My Answers Give Up edba Continue

Explanation / Answer

Here,

part A)

for the path difference of 2*wavelength

second order bright fringe will form

as B is the central maxima ,

second maxima is A , D

correct answer is AD

part B)

as the seperation is given as

y = wavelength * D/d

in water wavelength will be 1/1.33 times

y will also decrease by 1.33 times

the correct option is first

they are more closely spaced than in air by a factor of 1.33

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