BT-201 (GS) – Engineering Physics
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 1Explain the Heisenberg's uncertainty principle in detail.
Explain the Heisenberg's uncertainty principle in detail.
b)Unit 1Deduce the relation between phase and group velocities.
Deduce the relation between phase and group velocities.
a)Unit 1Obtain the time independent Schrodinger wave equation.
Obtain the time independent Schrodinger wave equation.
b)Unit 2How the Newton's rings are formed? Deduce the expression for diameter of dark and bright fringes.
How the Newton's rings are formed? Deduce the expression for diameter of dark and bright fringes.
a)Unit 2Describe the construction and working of Mach-Zehnder interferometer.
Describe the construction and working of Mach-Zehnder interferometer.
b)Unit 2Explain about the diffraction grating. A parallel beam of Sodium light incident on plane transmission grating having 4250 lines per centimeter and a second order spectral line is observed at an angle of 30°. Find the wavelength of Sodium light.
Explain about the diffraction grating. A parallel beam of Sodium light incident on plane transmission grating having 4250 lines per centimeter and a second order spectral line is observed at an angle of 30°. Find the wavelength of Sodium light.
a)Unit 3What is P-N junction diode? Discuss its I-V characteristics.
What is P-N junction diode? Discuss its I-V characteristics.
b)Unit 3Explain the construction and working of solar cell with neat diagrams.
Explain the construction and working of solar cell with neat diagrams.
a)Unit 3Derive an expression for Hall coefficient and Hall voltage.
Derive an expression for Hall coefficient and Hall voltage.
b)Unit 4Derive the relationship between Einstein A and B coefficients.
Derive the relationship between Einstein A and B coefficients.
a)Unit 4Explain the construction and working of He-Ne laser.
Explain the construction and working of He-Ne laser.
b)Unit 4Explain the numerical aperture of an optical fiber. Calculate the numerical aperture of a fiber with refractive indices of core and cladding are 1.55 and 1.50, respectively.
Explain the numerical aperture of an optical fiber. Calculate the numerical aperture of a fiber with refractive indices of core and cladding are 1.55 and 1.50, respectively.
a)Unit 5State and explain Stoke's and Gauss theorem.
State and explain Stoke's and Gauss theorem.
b)Unit 5Derive Maxwell equations in vacuum.
Derive Maxwell equations in vacuum.
Unit 1/2/3/4Write short notes on any two: a) Physical significance of wave function b) Young's double slit experiment c) Bloch's theorem d) Properties of Laser Light
Write short notes on any two: a) Physical significance of wave function b) Young's double slit experiment c) Bloch's theorem d) Properties of Laser Light