Question

when a slab of 1.47cm thickness is placed on the mark the microscope has to be raised tgrough 0.49cm to focus mark agaub calculate the refractive index of glass

Answer 1

refractive index of glass slab=thinkness of glass slab/thickness of glass slab-vertical shift
R.I=t/t-x
=1.47/1.47-0.49
=1.47/0.98
=1.5