WBCS.LIVE practice question

What physical quantity is measured using a Spherometer?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Density of liquids
  2. Atmospheric pressure
  3. Curvature of surfaces
  4. Speed of wind

Correct answer and explanation

Correct answer: Curvature of surfaces

Explanation: āœ… Correct Answer: C) Curvature of surfaces šŸ“š Explanation: A spherometer is a precision instrument primarily used to measure the radius of curvature of spherical surfaces like lenses or mirrors. It can also be used to measure the thickness of thin glass plates or the flatness of a surface. It works on the principle of a fine screw moving through a fixed nut.