The British physicist Thomas Young explained the interference of light using the…
Physics · Class 12 · CBSE — Wave Optics
The British physicist Thomas Young explained the interference of light using the principle of superposition of waves. He observed the interference pattern on the screen, in his experimental set-up, known now as Young's double slit experiment. The two slits S1 and S2 were illuminated by light from a slit S. The interference pattern consists of dark and bright bands of light. Such bands are called fringes. The distance between two consecutive bright and dark fringes is called fringe width.
Two sources of light are said to be coherent, when both emit light waves of:
- same amplitude and have a varying phase difference.
- same wavelength and a constant phase difference.
- different wavelengths and same intensity.
- different wavelengths and a constant phase difference.
Answer
(B) same wavelength and a constant phase difference.
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- At what angle of incidence will the light reflected from glass ( m = 1.5) be completely polarised
- In Young's double-slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths…
- The slits in Young’s double slit experiment are illuminated by light of wavelength 6000 Å. If the path…
- The critical angle of a certain medium is ^ -1 ( 3 5 ) . The polarizing angle of the medium is
- Yellow light of wavelength 6000 Å produces fringes of width 0.8 mm in Young’s double slit experiment. If the…
- In a single-slit diffraction experiment, the width of the slit is halved. The width of the central maximum…
- Two light waves superimposing at the mid-point of the screen are coming from coherent sources of light with…
- Assertion (A): In double slit experiment if one slit is closed, diffraction pattern due to the other slit…