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An experiment is performed to find the refractive index of glass using a travelling microscope. In this experiment, distances are measured by:

  1. A
    a vernier scale provided on the microscope
  2. B
    a standard laboratory scale
  3. C
    a meter scale provided on the microscope
  4. D
    a screw gauge provided on the microscope

Solution & Step-by-step Explanation

A travelling microscope is equipped with a main scale and a vernier scale to measure vertical or horizontal displacements with high precision (usually up to ), which is necessary for calculating real and apparent depth.

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An experiment is performed to find the refractive index of glass using a travelling microscope. In this experiment, distances are measured by:
A
a vernier scale provided on the microscope
B
a standard laboratory scale
C
a meter scale provided on the microscope
D
a screw gauge provided on the microscope

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