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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS
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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
For mark on paper
For mark on paper seen through slab
For powder particle on the top surface of the glass slab
Main Scale Reading, Vernier Coincidence)
Refractive index of the glass slab is:
For mark on paper
For mark on paper seen through slab
For powder particle on the top surface of the glass slab
Main Scale Reading, Vernier Coincidence)
Refractive index of the glass slab is:
View answer and explanation
Correct option: A
1.42
Option A (1.42) is correct because the refractive index is calculated by dividing the real depth by the apparent depth.
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Statement-I: Random errors can be positive or negative.
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of is that of
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of is that of