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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionEasy2 minPYQ_2019

PhysicsEasysingle choice

Light of wavelength $' λ^{'}$ is incident on a single slit of width ‘a’ and the distance between slit and screen ‘D’. In diffraction pattern, if slit width is equal to the width of the central maximum then ‘D’ is equal to

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Answer:

Solution:

The width of central maximum is given by
$2 y = \frac{2 D λ}{a}$ …. (i)
where, $λ =$ wavelength of incident light.
Here, a =2y, then from Eq. (i) we get
$a = \frac{2 D λ}{a} \Rightarrow D = \frac{a^{2}}{2 λ}$

Stream:MHT_CETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2019

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