Engineering FE Engineering Common Sem 2 Engineering Physics II May 2023 R19 Question Paper - Mumbai University | munotes

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Q1 Attempt any five out of six (3 marks each) A How the condition, for absent spectra in a grating, is obtained? Draw and explain energy level diagram for He:Ne laser. What is the role of C the help of a diagram define the term acceptance angle D = 3x’y - Find Vo at the point (-1, -2, 1) E the velocity of a particle having kinetic energy 3 times its rest F with an example, the significance of surface area to volume ratio 15 marks
Q2 Attempt all questions Discuss with appropriate diagram the phenomenon of Fraunhofer 8 diffraction at a single slit and write the conditions for its maxima and neat and labelled diagrams explain the construction and working of a 7 semiconductor laser. Give its application 15 marks
Q3 Attempt all questions Discuss the phenomenon of Fraunhofer’s diffraction at a single slit and 8 obtain the condition for the first minimum B scalar and vector fields? How is a del operator expressed? Explain 7 the term ‘curl of a vector and state its significance’. Show that the divergence of the curl of a vector is zero 15 marks
Q4 Attempt all three questions (5 marks each) What do you understand by resolving power? How can the resolving power of a grating be increased? Find maximum resolving power of a grating of width 7 cm, illuminated by a laser beam of wavelength 4800 having 000 State and derive maxwell’s equation which describes how the electric field circulates around the time varying magnetic field (Differential form) index fiber has a core diameter of 33 m. the refractive indices of core and cladding are 1.56 And 1.5189 respectively. If the light of wavelength 1.3 is transmitted through the fiber, Determine normalized frequency of the fiber. Weather fiber supports single mode or multimode 15 marks
Q5 Attempt all three questions (5 marks each) Explain Gauss’s laws for static electric and static magnetic fields in differential and integral forms Explain the concept of relativity. Comment on Galilean and lorentz C What is nano material? Explain any one method of production of nano 15 marks
Q6 Attempt all three questions (5 marks each) A State and explain application of optical fibre with suitable example Explain construction and working of Atomic force Microscope C is Time dilation and space contraction using Lorentz transformations obtain expression for them 15 marks

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