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Important Questions for "b.sc,physics":

[1]

  1. What is stereo isomerism? Explain with examples.
  2. Describe different kinds of molecular transport across cell membranes.
  3. Write short notes on synopses and signal transduction in biological systems.

[2]

  1. Explain the scope and methods of Biophysics.
  2. Briefly explain the biophysics of vision, hearing, sense of balance, and rotation.
  3. Write short notes on ATP.

[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. What are high energy molecules? Discuss their structure and functions.
  3. Discuss the light-dependent reaction of photosynthesis in plants and microbes.

[5]

  1. Write short notes on: (a) Relationship between Physics and Biology (b) Properties of open system.
  2. What are enzymes? Explain enzyme-substrate interactions.
  3. What are biological compartments? Discuss the use of electricity as a potential signal in various biological compartments.

[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. Why does pH range from 0-14 only? Explain the concept of buffers.
  2. Write short notes on: (a) pKa (b) Isoelectric point (c) Proton hopping (d) Enzymes.
  3. Explain the primary and secondary structures of proteins.

[8]

  1. Define the range of the probability of an event.
  2. Explain Fermi energy and factors it depends upon.
  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 ratio of different velocity measures in Maxwellian distributions?
  3. How is phase space volume calculated for molecular energy?

[10]

  1. What is the energy gap of a crystal transparent to specific wavelengths?
  2. What is the Geiger-Nuttall law?
  3. Explain the conditions under which nuclear fusion reactions take place.

[11]

  1. What components are present in an integrated circuit?
  2. What types of components are used in feedback circuits?
  3. What is the behavior of SCRs in switching applications?

[12]

  1. Write any three applications of Laser.
  2. Define phenomenon of double refraction.
  3. Define time dilation and derive the formula for it.

[13]

  1. Name different types of moving coil and moving iron instruments.
  2. State and prove maximum power transfer theorem.
  3. Discuss the phenomenon of interference of light due to thin films and find the conditions of maxima and minima.

[14]

  1. What are the differences between spontaneous and stimulated emission?
  2. Define time dilation, and derive the formula for time dilation.
  3. What are Newton's rings? How are they formed? Prove that in reflected light, diameters of bright rings are proportional to the square root of odd natural numbers.

[15]

  1. Describe the construction of a Nicol's prism. Explain how it can be used as a polarizer and as an analyzer.
  2. Describe the Michelson-Morley experiment and discuss its negative result.
  3. State and prove Thevenin's theorem.

[16]

  1. What is an interference of light?
  2. State and prove superposition theorem.
  3. Describe the construction and working of a Nicol's Prism. Explain how it can be used as an analyzer.

[17]

  1. Explain Michelson-Morley's experiment in detail.
  2. Write the postulates of special theory of relativity.
  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 impedance of an electric circuit? What is a linear impedance?
  2. Prove that: div. B = 0
  3. What is an electron gun? Explain its construction, working, and use.

[19]

  1. Distinguish between junction field effect transistor and bipolar junction transistor.
  2. Define current gain parameters for common base and common emitter configurations in a transistor. Establish a relation between them.
  3. Write notes on base-width modulation in a transistor.

[20]

  1. What do you understand by the law of equipartition of energy?
  2. Explain Doppler broadening of spectral lines.
  3. State the basic postulates of Einstein's theory of relativity and use them to obtain Lorentz transformations for frames in relative motion with constant velocity.

[21]

  1. Newton's laws of motion are based on the assumption that space is homogeneous, isotropic, both, or invariant under rotation?
  2. What is the ratio of most probable speed and average speed in a gas?
  3. Which statistics do phonons obey?

[22]

  1. What is the unit of cross-section?
  2. In a solid, how many degrees of freedom does an atom have?
  3. How is the magnetic moment (nuclear magnetron) expressed?

[23]

  1. Explain the assumptions of Fermi-Dirac statistics.
  2. State and prove Boltzmann canonical distribution law and give its two applications.
  3. Write assumptions of Maxwell-Boltzmann statistics and derive an expression for Maxwell-Boltzmann's distribution law.

[24]

  1. Explain the depletion layer in p-n junction diode with suitable diagram.
  2. What is Field Effect Transistor (FET)? Why is it called unipolar transistor?
  3. Find out the expression for input impedance, output impedance, current gain, voltage gain and power gain in terms of h-parameters for CE amplifier.

[25]

  1. Explain DC and AC load lines for transistor.
  2. Explain the formation of barrier field across the p-n junction diode. Derive the equation for the width of depletion layer and height of potential barrier.
  3. What is MOSFET? Explain the construction and working of depletion type and enhancement type of MOSFET with their respective characteristic curves.

[26]

  1. What is Boolean Algebra? Write down its commutative, associative and distributive properties.
  2. Explain the Kronig-Penny model. Derive the equation for the energy of an electron in one-dimensional periodic potential.
  3. Find out the expression for input impedance, output impedance, current gain, voltage gain and power gain in terms of h-parameters for CE amplifier.

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