(a) Describe and explain the formation of Newton's Rings in reflected…
Previous year question for Applied Engineering Physics.
Question
(a) Describe and explain the formation of Newton's Rings in reflected monochromatic light. Prove that in reflected light (i) diameters of bright rings are proportional to the square roots of odd natural numbers and (ii) the diameters of dark rings are proportional to the square roots of natural numbers. (12)
(b) Light of wavelength $5 \times 10^{-5}\text{ cm}$ is incident normally on a plane transmission grating of width $3\text{ cm}$ and $15000$ lines. Find the angle of diffraction in first order. (8)
- Year: 2018
- Subject: Applied Engineering Physics