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PhysicsElectrostaticsMiscellaneousMedium2 minQB

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Passage / Comprehension

In a modified Young’s double-slit experiment, there are three identical parallel slits S₁, S₂, and S₃. A coherent monochromatic beam with a wavelength of $700 nm$ , having plane wavefronts, falls on the slits. The intensity of the central point O on the screen is found to be $I_{0} W / m^{2}$ . The distance $S_{1} S_{2} = S_{2} S_{3} = 0.7 mm$ , and the screen is $30 c m$ from the slits.

Find the intensity on the screen at O if only $S_{3}$ is covered.

Options:

Answer:

Solution:

For $S_{3}$ covered.

$A_{net} = A 2 cos \frac{π}{6} = 2 A$

$I = 3 CA^{2}$

$I_{μ t} = \frac{3}{7} I_{0}$

Stream:JEESubject:PhysicsTopic:ElectrostaticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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