Hii Everybody

can any one tell me if i use
Microscope's microobjctive (MO) to focus a laser
beam,does it focus exactly according to its
magnification number?

i tell it different way,if i use He-Ne ~ 100 micron
spot to focus with 50X MO,will it make the spot size 2
micron in focal plane ?? is it wavelength
dependent,like IR,VIS,UV..i am interested in VIS only.

thanks in advance

regards
Dinesh



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