Q81 / 90 · JEE Main 2019 (11 Jan Shift 2) · Physics

In a double-slit experiment, green light $(5303 \mathrm{~A})$ falls on a double slit having a separation of $19.44 \mu \mathrm{m}$ and a width of $4.05 \mu \mathrm{m}$. The number of bright fringes between the first and the second diffraction minima is

A
10
Correct answer
B
5
C
4
D
9

Solution

5

Hence, the correct answer is option: 'B'.

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