1. In Young’s double slit experiment, derive the condition for
- Constructive interference and
- Destructive interference at a point on the screen.
2. A beam of light consisting of two wavelengths, 800 nm and 600 nm is used to obtain the interference fringes in a Young’s double slit experiment on a screen placed 1.4 m away. If the two slits are separated by 0.28 mm, calculate the least distance from the central bright maximum where the bright fringes of the two wavelengths coincide.
Kindly ask different queries in different thread. Also, refer the link of 2nd question.
https://www.meritnation.com/ask-answer/question/2-a-beam-of-light-consisting-of-two-wavelengths-800-nm-and/wave-optics/11120533
https://www.meritnation.com/ask-answer/question/2-a-beam-of-light-consisting-of-two-wavelengths-800-nm-and/wave-optics/11120533