BT-201 (GS) – Engineering Physics
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 1State and Prove uncertainty principle.
State and Prove uncertainty principle.
b)Unit 1Discuss the energy and momentum operator.
Discuss the energy and momentum operator.
c)Unit 1Derive the time dependent Schrodinger wave equation.
Derive the time dependent Schrodinger wave equation.
a)Unit 2Differentiate between division of amplitude and division of wavefront.
Differentiate between division of amplitude and division of wavefront.
b)Unit 2In Newton's Ring method, the diameter of nth and (n+14)th ring are 0.42 cm and 0.70 cm respectively. If the radius of curvature of plano convex lens is 100 cm, calculate the wavelength of light.
In Newton's Ring method, the diameter of nth and (n+14)th ring are 0.42 cm and 0.70 cm respectively. If the radius of curvature of plano convex lens is 100 cm, calculate the wavelength of light.
c)Unit 2Explain Michelson's Interferometer experiment on the basis of labelled diagram and types of fringes.
Explain Michelson's Interferometer experiment on the basis of labelled diagram and types of fringes.
a)Unit 3Write short notes on "Density of State".
Write short notes on "Density of State".
b)Unit 3Explain the Fermi level shifting in semiconductors.
Explain the Fermi level shifting in semiconductors.
c)Unit 3State and prove Bloch Theorem.
State and prove Bloch Theorem.
a)Unit 4Explain population inversion.
Explain population inversion.
b)Unit 4Write the properties of LASER.
Write the properties of LASER.
c)Unit 4Discuss the working of He-Ne Laser with labelled diagram.
Discuss the working of He-Ne Laser with labelled diagram.
a)Unit 5Explain the electrostatic potential for a charge distribution.
Explain the electrostatic potential for a charge distribution.
b)Unit 5Define gradient of a scalar field, divergence of a vector field.
Define gradient of a scalar field, divergence of a vector field.
c)Unit 5State and prove Stoke's Theorem.
State and prove Stoke's Theorem.
a)Unit 1Explain Dual nature of light.
Explain Dual nature of light.
b)Unit 1Establish the relation between Vp and Vg.
Establish the relation between Vp and Vg.
c)Unit 1Prove that for one dimensional motion of a particle in a box ψₙ = A sin(nπx/L).
Prove that for one dimensional motion of a particle in a box ψₙ = A sin(nπx/L).
a)Unit 2Define superposition of waves.
Define superposition of waves.
b)Unit 2Explain the Rayleigh's criteria for resolving power.
Explain the Rayleigh's criteria for resolving power.
c)Unit 2Discuss the Young's double slit experiment on the basis of labelled diagram, formula used and significance.
Discuss the Young's double slit experiment on the basis of labelled diagram, formula used and significance.
a)Unit 4Write down the applications of LASER in engineering and medicine.
Write down the applications of LASER in engineering and medicine.
b)Unit 4Write down the importance of total internal reflection in optical fiber.
Write down the importance of total internal reflection in optical fiber.
c)Unit 4Calculate the numerical aperture and acceptance angle for an optical fiber, given that the refractive indices of the core and the cladding are 1.45 and 1.41, respectively.
Calculate the numerical aperture and acceptance angle for an optical fiber, given that the refractive indices of the core and the cladding are 1.45 and 1.41, respectively.