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:

Experimental Skills: JEE Main 2024 Physics question

JEE Main 2024 · 6 Apr, Evening shift · Q8369

JEE Main 20246 Apr, Evening shiftPhysicsHardExperimental Skills34× since 2008

In finding out refractive index of glass slab the following observations were made through travelling microscope 50 vernier scale division

=49 \mathrm{~MSD} ; 20

divisions on main scale in each

\mathrm{cm}

For mark on paper

\text { MSR }=8.45 \mathrm{~cm}, \mathrm{VC}=26

For mark on paper seen through slab

\mathrm{MSR}=7.12 \mathrm{~cm}, \mathrm{VC}=41

For powder particle on the top surface of the glass slab

\text { MSR }=4.05 \mathrm{~cm}, \mathrm{VC}=1

(MSR

=

Main Scale Reading, VC = Vernier Coincidence) Refractive index of the glass slab is :

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