Question 238: Ray Optics

Question

To determine refractive index of glass slab using a travelling microscope, minimum number of readings required are :

Accepted Answer

The refractive index is
$$\mu  = {{{\mathop{m Real}
olimits} \,depth} \over {Apparent\,depth}} = {{{\mathop{m Reading}
olimits} \,3 - Reading\,1} \over {{\mathop{m Reading}
olimits} \,3 - Reading\,2}}$$
Therefore, the minimum of three readings are required.

Answer

Two

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Three

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Four

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Five

Ray Optics

To determine refractive index of glass slab using a travelling microscope, minimum number of readings required are :

Choose the correct answer: