JEE · NEET Previous Year Question
In Young’s double slit experiment the separation d between the slits is 2 mm, the wavelength of the light used is 5896 and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is To increase the fringe angular width to (with same and D) the separation between the slits needs to be changed to
Topic: NEET PYQ
Answer: B. Full step-by-step solution below.
- A1.8 mm
- B1.9 mm
- C2.1 mm
- D1.7 mm.
Correct answer: B
Solution
(b) : Angular widthand Dividing we get,
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