Physics · Metrology
The basic principle of interferometry is based on which of the following?
- 1Refraction of light through different media to measure angles
- 2Absorption of light to determine material thickness
- 3Superposition of two or more coherent light waves✓
- 4Diffraction of light to analyse surface roughness
Correct answer
Superposition of two or more coherent light waves
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Preparing for Physics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Want more practice questions on Metrology?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Physics · Metrology