Interference ( fringe width expression and shape of Fringes)

[@salmanzabha7428]

Thank you dear professor

[@ajaykumar-hk5zu]

Thank you sir.

[@spssps3152]

Thank you sir ...

[@MahuaBauri-gm3ng]

A huge respect for you sir. I constantly follow your lectures . It helps me lot to clear my concept which i can't till my Msc from my professors .Your kind and sincere advice pulls me up from depression. But still i can't be so much confident that i can crack competitive exams . Sir please say
something about how to stand up again and gain courage to appear in the upcoming june net exam properly. I am eagerly waiting for your valuable reply .please sir