*physics important questions*
*Unit 3*
*1. Bubble memory devices*
*2.Solid electolytes*
*Unit 4*
*1.Pvd(physical vapor deposition method)*
*2.Topdown and bottom down method*
*With each one one example*
*3.Application and properties of nano materials*
*4.Xray diffraction(XRD)*
*5.Sem(scanning electron microscope)*
*5th unit*
*1.Einstein coefficient*
*2.Acceptance angle and Acceptance cone*
*3.Ruby laser and co2 laser*
*4.Types of optical fiber*
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