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Important Questions for "b.sc,physics":

[1]

  1. Describe properties of open systems.
  2. Describe the role of water in biological systems/processes.
  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. 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. What are enzymes? Explain enzyme-substrate interactions.
  3. Explain chemiosmotic coupling with special reference to photosynthesis.

[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. Write short notes on: (i) Photoreception in vertebrates (ii) Electrical activity of rhodopsin.

[7]

  1. Write short notes on: (a) pKa (b) Isoelectric point (c) Proton hopping (d) Enzymes.
  2. Explain the following: (a) Enzyme-substrate reactions (b) Antigen-antibody interactions.
  3. Explain intra- and inter-nuclear interactions in biological systems.

[8]

  1. What is the probability of occurrence of both independent events simultaneously?
  2. Describe the concept of phase space and microstates.
  3. What are quantum statistics and under what conditions do they resemble classical statistics?

[9]

  1. What are the fundamental laws of Physics in inertial frames?
  2. What is the speed at which the mass of a particle becomes three times its rest mass?
  3. Under what conditions do B-E statistics and F-D statistics equal M-B statistics?

[10]

  1. Describe pair production and its energy conditions.
  2. Explain the spin of hyperon.
  3. Describe the Miller indices for a plane that makes specific intercepts along given axes.

[11]

  1. How do you calculate AC drain resistance for a JFET?
  2. What type of gain is associated with reverse voltage in transistors?
  3. How is the efficiency of a power amplifier calculated?

[12]

  1. Describe the construction and working of He-Ne gas laser with the energy level diagram.
  2. What are Newton's rings? How are they formed? Show that in reflected light diameter of bright rings is proportional to square root of odd numbers.
  3. State and prove superposition theorem.

[13]

  1. Name different types of moving coil and moving iron instruments.
  2. Define time dilation and derive the formula for time dilation.
  3. State and prove maximum power transfer theorem.

[14]

  1. Define time dilation, and derive the formula for time dilation.
  2. 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.
  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. What is meant by the resolving power of an optical instrument? Explain Rayleigh's criterion for just resolution.

[16]

  1. What are the characteristic properties of a laser beam?
  2. 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.
  3. State and prove superposition theorem.

[17]

  1. Explain Michelson-Morley's experiment in detail.
  2. State and prove the perpendicular axis theorem related to Moment of Inertia.
  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. Prove that: div. B = 0
  3. State and explain Kirchhoff's law of electrical network.

[19]

  1. Why is biasing necessary for a transistor? Describe various methods of transistor biasing. Which method is best and why?
  2. Draw the circuit diagram of a transformer-coupled transistor amplifier. Derive an expression for voltage gain at low, mid, and high frequencies.
  3. Write notes on distortion in amplifiers.

[20]

  1. Show that the length of a rod is invariant under Galilean transformation.
  2. Explain Doppler broadening of spectral lines.
  3. Give the quantum mechanical theory of linear harmonic oscillator and obtain an expression for its zero-point energy.

[21]

  1. What are the Miller indices of a plane cutting intercepts of 1, 2, and 3 along three axes?
  2. What is the total number of atoms per unit cell in diamond structure?
  3. Which statistics do phonons obey?

[22]

  1. In a solid, how many degrees of freedom does an atom have?
  2. What does the liquid drop model successfully explain?
  3. What is the binding energy of NaCl in cohesive terms?

[23]

  1. State the postulates of special theory of relativity.
  2. Explain the assumptions of Fermi-Dirac statistics.
  3. Show that the expression x^2 + y^2 + z^2 - c2t2 is invariant under Lorentz transformation.

[24]

  1. Convert hexadecimal number (49)16 to decimal equivalent.
  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. 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. What is Field Effect Transistor (FET)? Why is it called unipolar transistor?
  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. Derive the Barkhausen criterion for sustained oscillations.
  2. Convert decimal (4097)10 to binary equivalent.
  3. Convert octal number (24) to binary equivalent.

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