In finding out refractive index | Physics | JEE Main 2024

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JEE Main 2024

06-04-2024 S2

Question

In finding out refractive index of glass slab the following observations were made through travelling microscope 50 vernier scale division = 49 MSD; 20 divisions on main scale in each cm
For mark on paper
MSR = 8.45 cm, VC = 26
For mark on paper seen through slab
MSR = 7.12 cm, VC = 41
For powder particle on the top surface of the glass slab
MSR = 4.05 cm, VC = 1
(MSR = Main Scale Reading, VC = Vernier Coincidence)
Refractive index of the glass slab is:

Select the correct option:

A

1.42

B

1.52

C

1.24

D

1.35

✓ Correct! Well done.

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