Start Free Mock LoginAlready registered? Login here

Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionEasy2 minPYQ_2020

PhysicsEasysingle choice

The interference pattern is observed at $P$ due to superimposition of two rays coming out from a source $S$ as shown in the figure. The value of $l$ for which maxima is obtained at $P$ is ( $R$ is a perfect reflecting surface): -

Options:

Answer:

Solution:

$x c o s 30 ° = l$

$x \frac{\sqrt{3}}{2} = l$

$x = \frac{2}{\sqrt{3}} l$

$\frac{2 l}{\sqrt{3}} + \frac{2 l}{\sqrt{3}} + \frac{λ}{2} - 2 l = n λ$

$2 l (\frac{2}{\sqrt{3}} - 1) = (2 n - 1) \frac{λ}{2}$

$2 l (2 - \sqrt{3}) = \frac{(2 n - 1) λ \sqrt{3}}{2}$

$l = \frac{(2 n - 1) λ \sqrt{3}}{4 (2 - \sqrt{3})}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...