Assertion: If width of one slit in Young's double slit experiment is slightly increased, then maximum and minimum both intensities will increase.
Reason: Intensity reaching from that slit on screen will slightly increase.

Options

A. (a)If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. (b)If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
C. (c) If Assertion is true, but the Reason is false.
D. (d) If Assertion is false, but the Reason is true.

Answer

A

Explanation

`I_(max) = (sqrtI_1+sqrtI_2)^2` and
` I_(min) = (sqrtI_1-sqrtI_2)^2`
When `I_1 = I_2 = I_0` , then
`I_(max) = 4I_0 and I_(min) = 0`
When slit of one width is slightly increased, then intensity due to that slit becomes greater than `I_0`.
In that case, we can see that
` I_(max)gtd4I_0 and I_(min)gt0`.