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JEE MAIN 2025
22-01-2025 SHIFT-2
Question
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In Young's double slit experiment, the fringes produced by red light are closer as compared to those produced by blue light.
Reason (R): The fringe width is directly proportional to the wavelength of light.
Select the correct option:
A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\begin{aligned} & \beta=\frac{\lambda \mathrm{D}}{\mathrm{d}} \& \lambda_{\mathrm{R}}>\lambda_{\mathrm{b}} \\ & \therefore \beta_{\mathrm{R}}>\beta_{\mathrm{b}}\end{aligned}$
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