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Question
To determine refractive index of glass slab using a travelling microscope, minimum number of readings required are:
A
Two
B
Four
C
Three
D
Five
Medium
JEE Mains
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Solution
Verified by Toppr
Correct option is C)
Reading one
⇒
without slab
Reading twoÂ
⇒
 with slab
Reading threeÂ
⇒
 with sawdust
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