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Wave Optics question

2019 · Shift 2 · Q42

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JEE Advanced
Physics
Wave Optics
2019 · Shift 2 · Q42

Wave Optics question

2019 · Shift 2 · Q42

JEE AdvancedPhysicsWave OpticsMultiple correct+4 / −1

In a Young's double slit experiment, the slit separation d is 0.3 mm and the screen distance D is 1 m. A parallel beam of light of wavelength 600 nm is incident on the slits at angle

\alpha

as shown in figure. JEE Advanced 2019 Paper 2 Offline Physics - Wave Optics Question 17 English

JEE Advanced 2019 Paper 2 Offline Physics - Wave Optics Question 17 English

On the screen, the point O is equidistant from the slits and distance PO is 11.0 mm. Which of the following statement(s) is/are correct?

A
For $\alpha$ = 0, there will be constructive interference at point P.
B
For $\alpha = {{0.36} \over \pi }$ degree, there will be destructive interference at point P.
C
For $\alpha$ = $\alpha = {{0.36} \over \pi }$ degree, there will be destructive interference at point O.
D
Fringe spacing depends on $\alpha$ .

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