state gov TNPSC Group 2/2A (தமிழ்நாடு) Mock Test 2024 General Knowledge Science Technology and Inventions
Which of these statements is correct about interferometer?
1
It is a device that divides a beam of radiation into two distinct paths and then recombines the two beams after introducing a difference in the two paths.
2
It is a device that divides a beam of radiation into three distinct paths and then recombines the three beams after introducing a difference in the two paths.
3
It is a device that divides a beam of radiation into one distinct paths and then recombines the two beams after introducing a difference in the two paths.
4
It is a device that divides a beam of radiation into two distinct paths and then recombines the one beams after introducing a difference in the two paths.