GK Question

science medium mcq

Which instrument is used to measure the wavelength of light?

  1. Microscope
  2. Telescope
  3. Spectrometer
  4. Polarimeter

Answer: Spectrometer

Spectrometer disperses light into spectrum to measure wavelength, intensity, and spectral lines. Essential for atomic spectroscopy, chemical analysis, and astronomy. [[NCERT Physics Class 12]]

Topic Physics - Optics Instruments
Exam Relevance Railway JE, SSC JE, Banking Specialist Officer