RVR PHYSICS online Lecture-7 on LASERS

Construction & working of He-Ne Laser

[@sivajyothi3924]

Super Rvr sir. Your lecture is with such a adequate information along with in the reach of understanding levels of the students. Energy level diagram is also very very clear with each and every basic step. Your voice modulation is also good

[@DrRVR369]

Thank you madam

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