Diffraction-3: Plane transmission grating and Grating equation | KTU | Engineering Physics |Module-2

KTU B.Tech Engineering Physics
Malayalam videos as per Kerala Technological University (KTU) B.Tech syllabus (2019 scheme)
KTU B.Tech Engineering Physics Complete Playlist:-
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• KTU ENGINEERING PHYSIC...
Diffraction ( Wave optics) :-
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Playlist : • Diffraction | KTU | E...
Topic Coverage : Diffraction of light, Fresnel and Fraunhofer classes of diffraction, Diffraction grating-Grating equation, Rayleigh criterion for limit of resolution, Resolving and Dispersive power of a grating with expression (no derivation)
#KTU #physics #sajeevmohan #BTech #BSc

[@ravishankarkr7696]

Thank u sir I also had same doubt

[@sajeevmohan]

🙏

[@moviesrecommended1775]

Excellent teaching sir

[@sajeevmohan]

Thank you.🙏

[@feenarobyfeena]

Nice class sir 😊

[@sajeevmohan]

🙏

[@appu228]

in previous video ie. in single slit diffraction you told that for darkness , path difference=n(lamda)
but in this video you are saying that for brightness oath difference = n(lamda)

[@sajeevmohan]

If you watch the video again it will be clear. In the case of single slit, we have to consider the superposition of all the secondary waves emanating from the single wave front. That's why we have divided the wave front into two halves and discussed. When the path difference is lamda, each point in each half will have a point in the other haf with a path difference lamda/2. So, n lamda path difference will result in darkness.

[@sajeevmohan]

Then regarding grating adjacent slits are to be treated as two separate sources. So, the treatment is similar to young's double slit and so path difference n lamda will be result in constructive superposition.

[@sajeevmohan]

Watch both the videos once again now and it will become clear to you.

[@nandhu2030]

@@sajeevmohan i am looking for this till today aftetnoon

[@anziyats2434]

Adhyathe in case of reflected ray ahn.ith transmitted ray ahn apo condition change avunn nml introduction l pdichitd

[@appu228]

sir is n(lamda ) the path difference for bright or dark fringe ?

[@malluumovies5947]

Bright

[@Itsurdudemf]

Sir notes??