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Important Questions for "b.sc,physics":

[1]

  1. Describe properties of open systems.
  2. Discuss the role of diffusion in biological systems.
  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. Explain membrane potential of biological membranes.

[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) Colorimetry (b) Steroid hormone.
  3. Write short notes on: (a) Membrane potential (b) Charismatic hypothesis.

[5]

  1. Write short notes on: (a) Relationship between Physics and Biology (b) Properties of open system.
  2. Write short notes on: (a) First law of thermodynamics (b) Conformational properties of enzymes.
  3. Explain biomechanics and discuss the biomechanics of locomotory organs in vertebrates.

[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 chemiosmotic couplings and describe the biomechanics of the cardiovascular system.

[7]

  1. Draw the structure of the human eye. Explain its working and defects.
  2. Write short notes on: (a) pKa (b) Isoelectric point (c) Proton hopping (d) Enzymes.
  3. Explain the laws of thermodynamics. How do they apply to biological systems?

[8]

  1. Describe Bose-Einstein distribution law and its implications.
  2. What is Maxwell distribution of velocities and how is it derived?
  3. Write notes on relativity concepts including length contraction and relativistic energy.

[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 minimum probability of filling Fermi energy levels in a Fermi gas?

[10]

  1. Explain the significance of Brillouin zones in lattice structures.
  2. What is the Geiger-Nuttall law?
  3. Describe the role of alpha, beta, and gamma radiation in nuclear reactions.

[11]

  1. What is the full form of MOSFET?
  2. What wire materials are used for Cat's Whisker?
  3. What is the role of light intensity in phototransistors?

[12]

  1. Define time dilation and derive the formula for it.
  2. Describe the construction and working of He-Ne gas laser with the energy level diagram.
  3. State and prove superposition theorem.

[13]

  1. Define time dilation and derive the formula for time dilation.
  2. Write basic postulates of special theory of relativity and deduce the Lorentz transformation from the postulates.
  3. Discuss the phenomenon of interference of light due to thin films and find the conditions of maxima and minima.

[14]

  1. Define inertial and non-inertial frames.
  2. What are the differences between spontaneous and stimulated emission?
  3. State and prove the Maximum Power Transfer Theorem.

[15]

  1. What are the postulates of special theory of relativity?
  2. Explain the phenomenon of double refraction in calcite or quartz.
  3. State and prove Thevenin's theorem.

[16]

  1. Show that the time for attaining half the value of the final equilibrium (maximum) current in a circuit having an inductance L and a resistance R in series is 0.69 L/R.
  2. State and prove superposition theorem.
  3. State the fundamental postulates of the special theory of relativity and deduce the Lorentz transformation equation.

[17]

  1. Deduce the Poiseuille's formula and write its limitations.
  2. State Kepler's laws of planetary motion and derive them.
  3. What do you understand by Vector Integration? Explain the meaning of line integral, surface integral, and volume integral.

[18]

  1. What is meant by Current Network?
  2. Explain the difference between magnetic force and electric force.
  3. What is an electron gun? Explain its construction, working, and use.

[19]

  1. Define and explain Fermi level.
  2. Distinguish between junction field effect transistor and bipolar junction transistor.
  3. Write notes on base-width modulation in a transistor.

[20]

  1. Write the assumptions of Fermi-Dirac statistics.
  2. Two states are in thermal contact. Deduce the conditions for thermal equilibrium and show that B = 1/KT.
  3. Explain the assumptions of Bose-Einstein statistics and derive the B-E distribution law.

[21]

  1. What will be the mass of an electron moving with a velocity equivalent to times the velocity of light, given its rest mass is 9x10^-31 kg?
  2. Which structure has maximum packing fraction?
  3. According to Dulong and Petit's law, what is the average energy of an atom at temperature T?

[22]

  1. What does the liquid drop model successfully explain?
  2. What is the binding energy of NaCl in cohesive terms?
  3. What is the approximate value of nuclear radius?

[23]

  1. State the postulates of special theory of relativity.
  2. Deduce an expression for the variation of mass with velocity. With the help of a graph, explain its experimental verification.
  3. Derive an expression for Maxwell-Boltzmann's distribution law for molecular speeds in an ideal gas. Obtain expressions for average speed, root mean square speed, and most probable speed.

[24]

  1. Explain the depletion layer in p-n junction diode with suitable diagram.
  2. Discuss the Fermi level in intrinsic and extrinsic semiconductors.
  3. Convert octal number (24) to binary equivalent.

[25]

  1. Explain the depletion layer in p-n junction diode with suitable diagram.
  2. What is Boolean Algebra? Write down its commutative, associative and distributive properties.
  3. Explain the working of tuned collector oscillator with circuit diagram and derive the equation for its frequency of oscillation.

[26]

  1. Explain DC and AC load lines for transistor.
  2. What is Field Effect Transistor (FET)? Why is it called unipolar transistor?
  3. Convert octal number (24) to binary equivalent.

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