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Important Questions for "b.sc,physics":

[1]

  1. Discuss the role of diffusion in biological systems.
  2. Explain photosynthesis as a photochemical process.
  3. Explain how neurotransmission is initiated by membrane potential.

[2]

  1. Explain the scope and methods of Biophysics.
  2. Briefly explain the biophysics of vision, hearing, sense of balance, and rotation.
  3. Briefly explain the living body as a thermodynamic system.

[3]

  1. Explain the physics of the following: (a) Biophysics of water (b) Ultrafiltration
  2. What is the first and second law of thermodynamics? Explain their significance in biophysics.
  3. How does physics explain the formation of an image in the eye? Explain with a diagram.

[4]

  1. Discuss the internal structure and biophysics of stato-phono receptors.
  2. Write short notes on: (a) Defects of vision and corrections (b) Water as a universal solvent.
  3. Write short notes on: (a) Isomerism (b) Laws of thermodynamics.

[5]

  1. Write short notes on: (a) Relationship between Physics and Biology (b) Properties of open system.
  2. Explain chemiosmotic coupling with special reference to photosynthesis.
  3. Explain the mechanism of energy transfer during respiration.

[6]

  1. Write short notes on: (i) Scope of Bio-Physics (ii) Properties of open systems.
  2. Write short notes on: (i) Relationship between Physics and Biology (ii) Electricity as a potential signal.
  3. Explain biological compartments and describe the electrical properties of biological compartments.

[7]

  1. What are high-energy biomolecules? Explain their role in energy transductions.
  2. Write short notes on: (a) Chirality (b) Hormones (c) Photosynthesis (d) Vision faults.
  3. Explain the primary and secondary structures of proteins.

[8]

  1. Define the range of the probability of an event.
  2. Explain the classical statistics and their application to systems of particles.
  3. Describe Bose-Einstein distribution law and its implications.

[9]

  1. What are the fundamental laws of Physics in inertial frames?
  2. What is the formula for addition of relativistic velocities?
  3. What is the smallest particle in quantum statistics?

[10]

  1. Explain the spin of hyperon.
  2. Describe the Miller indices for a plane that makes specific intercepts along given axes.
  3. What is the expression for interplanar spacing in a simple cubic lattice?

[11]

  1. What mixture is used to fabricate commercial thermistors?
  2. How is a Zener diode typically used?
  3. What is the typical capacitance value for junction transitions?

[12]

  1. Define phenomenon of double refraction.
  2. Find the relation between Einstein's coefficients.
  3. Describe the construction and working of He-Ne gas laser with the energy level diagram.

[13]

  1. Define time dilation and derive the formula for time dilation.
  2. Define dispersive power of a grating and obtain an expression for it.
  3. Write basic postulates of special theory of relativity and deduce the Lorentz transformation from the postulates.

[14]

  1. Write any four properties of Laser.
  2. Name different types of moving coil and moving iron instruments.
  3. State and prove the Maximum Power Transfer Theorem.

[15]

  1. Explain the phenomenon of double refraction in calcite or quartz.
  2. Define length contraction and derive the formula for it.
  3. With necessary theory and energy level diagram, explain the working of a Helium-Neon gas laser.

[16]

  1. What is the velocity of mesons whose proper mean life is 2.510 seconds and observed mean life is 2.510 seconds?
  2. State and prove superposition theorem.
  3. Deduce Einstein's mass-energy relation, E = mc.

[17]

  1. Explain Michelson-Morley's experiment in detail.
  2. Write the postulates of special theory of relativity.
  3. What do you mean by length contraction at relativistic speeds? Deduce the necessary expression.

[18]

  1. What do you understand by Lorentz Force?
  2. What is meant by Current Network?
  3. State Gauss' theorem and prove it.

[19]

  1. Write notes on base-width modulation in a transistor.
  2. Write notes on Silicon control rectifier.
  3. Write notes on distortion in amplifiers.

[20]

  1. Deduce the Boltzmann entropy-probability relation: S = k log W.
  2. Define the following terms: Phase space, Bosons and Fermions.
  3. Give the quantum mechanical theory of linear harmonic oscillator and obtain an expression for its zero-point energy.

[21]

  1. What is the statistical mechanics in terms of microscopic and macroscopic systems?
  2. What is the total number of atoms per unit cell in diamond structure?
  3. According to Dulong and Petit's law, what is the average energy of an atom at temperature T?

[22]

  1. How is the magnetic moment (nuclear magnetron) expressed?
  2. How many sulphide atoms are there in the unit cell of a zinc sulphide crystal?
  3. What is the energy of a phonon?

[23]

  1. What are Ensembles? Explain different kinds of ensembles.
  2. Explain probability and thermodynamic probability with examples.
  3. The relative probability for a system at temperature T, to be found in two states with an energy difference of 4.8 10^-21 Joule is C2. Calculate the temperature T.

[24]

  1. Explain the depletion layer in p-n junction diode with suitable diagram.
  2. Convert octal number (24) to binary equivalent.
  3. Convert hexadecimal number (49)16 to decimal equivalent.

[25]

  1. Convert hexadecimal number (49)16 to decimal equivalent.
  2. Draw the circuit of R-C coupled CE amplifier and explain its frequency response curve at different frequency ranges. Why does the gain decrease in low and high frequency ranges?
  3. What are Power Amplifiers? Write down the difference between Voltage and Power Amplifiers. Explain the working of class A power amplifier with suitable circuit diagram and output characteristic curve.

[26]

  1. What is Field Effect Transistor (FET)? Why is it called unipolar transistor?
  2. Convert hexadecimal number (49)16 to decimal equivalent.
  3. What is MOSFET? Explain the construction and working of depletion type and enhancement type of MOSFET with their respective characteristic curves.

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