NEET | 2018Wave motionHard
Question
In Young's double slit experiment the separation d between the slits is 2 mm, the wavelength of the light used is 5896 Å and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is 0.20°. To increase the fringe angular width to 0.21° (with same and D) the separation between the slits needs to be changed to :-
Options
A.
1.8 mm
B.
1.9 mm
C.
2.1 mm
D.
1.7 mm
Solution
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