APPLIED PHYSICS — Major (End Semester) 2023 question paper
MMMUT Chemical Engineering previous year question paper for APPLIED PHYSICS (BSM-126), semester 1, Major (End Semester) 2023. All 24 questions are listed below, each with a written answer on Nexsus.
Paper details
Subject: APPLIED PHYSICS (BSM-126)
Branch: Chemical Engineering
Semester: 1
Exam: Major (End Semester) 2023
Questions: 24
Questions asked in APPLIED PHYSICS Major (End Semester) 2023
Q1(a). Derive Lorentz transformation formula for space and time coordinate [2 marks]
Q1(b). If the length in four-dimensional Minkowsky space is given by ds 2 =dx 2 +dy 2 +dz 2 −c 2 dt 2 , show that it is invariant under Lorentz transformation. [2 marks]
Q1(c). Describe polarization and function of the Nicol prism to produce polarized lig [2 marks]
Q1(d). What are the conditions to obtain interference pattern on a screen? [2 marks]
Q1(e). Explain the principle involved in propagation of waves through optical fibers [2 marks]
Q1(f). What do you mean by optical pumping and population inversion? Explain their roles in producing laser light. [2 marks]
Q1(g). Write down five potential applications of nano-bio-materials. [2 marks]
Q2(a). Describe Michelson–Morley experiment. Why is called a null experiment? How did it discard the idea of ether? What arguments were given against them? Explain. [5 marks]
Q2(b). Derive to formula ΔE=Δmc 2 Here the terms have their usual meanings. Give two appropriate examples of mass–energy equivalence formula. [5 marks]
Q2(c). Obtain the formula for relativistic mass. Show that particles having zero rest mass, moves with the speed of light. [5 marks]
Q3(a). What is the difference between Fresnel and Fraunhofer class of diffractions? Derive the conditions for the maximum and minimum intensities in diffraction phenomenon from a simple slit. [5 marks]
Q3(b). A soap film of refractive index 1.33 and thickness 6200 A ˚ is exposed to white light. What wavelengths in the visible region are reflected? [5 marks]
Q3(c). Describe the construction and function of a telescope. [5 marks]
Q4(a). (a) Describe the construction and function of Ruby Laser with the help of neat and clean diagram. [5 marks]
Q4(b). Explain the term “LASER”. How is laser light different from ordinary light? What do you mean by Einstein’s coefficients? How does stimulated emission help to amplify the intensity of radiation? [5 marks]
Q4(c). Define angle of acceptance and derive a formula for it in case of optical fibres. Write down five potential applications of optical fibres. [5 marks]
Q5(a). What do you mean by nanomaterials? Classify them as 0D, 1D and 2D nanomaterials and give one appropriate example of each. [5 marks]
Q5(b). Discuss properties of electromagnetic radiations. Write down bands and their respective frequency range in which the whole electromagnetic radiation is divided. What will be the frequency and wavelength of photon with energy 2.43×10 −4 eV? In which band does it fall? [5 marks]
Q5(c). Explain the basic principles involved in NMR. What information can be drawn from NMR spectrum? Explain. [5 marks]