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.
The fringe width in a Young's double slit experiment is \(\beta\) . If the whole set-up is immersed in a liquid of refractive index \(\mu\) , then the new fringe width will be:
- \(\beta\)
- \(\beta\mu\)
- \(\frac {\beta}{\mu}\)
- \(\frac {\beta}{\mu^2}\)
Answer
(C)
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