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 total path difference between two waves meeting at points P1 and P2 on the screen are \(\left(\frac{3 \lambda}{2}\right)\) and 2 \(\lambda\) respectively. Then:
- bright fringes are formed at both points.
- dark fringes are formed at both points.
- a bright fringe is formed at P1 and a dark fringe is formed at P2.
- a bright fringe is formed at P2 and a dark fringe is formed at P1.
Answer
(D) a bright fringe is formed at P 2 and a dark fringe is formed at P 1 .
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- What is the minimum thickness of a soap film needed for constructive interference in reflected light, if the…
- The velocity of light in air is 3 × 10 8 m s –1 and that in water is 2.2 × 10 8 m s –1 . The polarising angle…
- The two coherent sources with intensity ratio b produce interference. The fringe visibility will be
- In a double slit interference pattern, the first maxima for infrared light would be
- Assertion (A): Corpuscular theory fails in explaining the velocities of light in air and water. Reason (R)…
- Which of the following is the path difference for distructive interference ?
- The two slits are 1 mm apart from each other and illuminated with a light of wavelength 5 × 10 –7 m. If the…
- Figure shows a standard two slit arrangement with slits S 1 , S 2 and P 1 , P 2 are the two minima points on…