Hi experts
Pls an emergency
I beg u pls answer these questions.
Pls pls I beg you pls

Solution
1.Refractive index of medium M =Speed of light in airSpeed of light in medium Mμ =3×1081.5×108 =22. Refractive index of glass slab =Speed of light in airSpeed of light in glass slab1.5 =3×108v v =3×1081.5 =2×108

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