To Determine Refractive Index of a Glass slab using a Travelling Microscope


A Travelling microscope is a compound microscope that is fitted on a vertical scale. It carries a vernier scale along the main scale and can be moved upward or downward. Below is an experiment to determine refractive index of a glass slab using a travelling microscope.


When a glass slab is placed on a horizontal surface, and its bottom surface is viewed from the top, it appears to be elevated due to refraction. The apparent thickness of the slab is determined by the distance between the apparent bottom and the top of the glass slab.

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