(a) Differentiate between : (i) Laser and Ordinary light (ii) Hologra…
Previous year question for Applied Engineering Physics.
Question
(a) Differentiate between :
(i) Laser and Ordinary light
(ii) Holography and Photography
Explain the principle of Holography. How is hologram produced and how is the image reconstructed from it. Discuss some of its applications. 12
(b) A glass clad fibre is made with core glass of refractive index 1.5 and the cladding is doped to give a fractional index difference of 0.0005. Find :
(i) Cladding index and
(ii) Numerical aperture. 8
- Year: 2018
- Subject: Applied Engineering Physics