Multiple choice

The instrument 'photometer' is used to

  1. magnify or view very small objects

  2. measure the refractive index of a substance

  3. to compare the luminous intensity of the sources of light

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A photometer is an instrument that measures the intensity of light or compares luminous intensity between different light sources. It's used in physics and optics laboratories.

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