The density of gold in its proper frame of reference is 19.3 \times 10\text{ kg/m}^3. Determine its density is a frame of reference where its velocity is 0.9 c. c is velocity of light in free space.
cse-1995-subject-01-010
Determine the speed of an electron which has kinetic energy 1\text{ MeV}. The energy equivalent to the rest mass of an electron is 0.51\text{ MeV}.
cse-1995-subject-01-009
A stream of liquid of density \rho and speed v is directed against a plane surface at an angle \theta with the normal to the surface. After striking the surface the liquid spreads over it. Find the pressure on the surface.
cse-1995-subject-01-008
Distinguish between stream-line motion and turbulent motion. Hence define Reynold’s number. A sphere of radius 0.1\text{ cm} moves through glycerine. A laminar flow is observed when the velocity of the sphere does not exceed 15\text{ cm/s}. At what minimum velocity of a sphere of radius 5\text{ cm} will the flow in water become turbulent? Viscosity coefficient for glycerine \eta_{\text{gly}} = 14\text{ p} and for water \eta_{\text{wat}} = 0.011\text{ p}, and density of glycerine = 1.2\text{ gm/cc}.
cse-1995-subject-01-007
Write a short note on Gyroscope.
cse-1995-subject-01-006
What is the difference between the frequency spectrum of amplitude modulated wav and frequency modulated waves? Give a circuit for the detection of frequency modulated waves.
cse-1994-subject-08-003
Explain the construction and working of a p -n junction solar cell.
cse-1994-subject-08-002
Derive an expression for magnetic susceptibility below Neel's temperature for a ferromagnetic substance.
cse-1994-subject-08-001
Draw a circuit using AND, OR and NOT gate to realize the following truth table:
| \text{INPUTS} | \text{OUTPUT} | ||
| A | B | C | Y |
| 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 1 |
| 0 | 1 | 0 | 1 |
| 1 | 0 | 0 | 1 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 0 | 0 |
| 1 | 1 | 1 | 1 |
cse-1994-subject-08-004
Explain parity violation in b decay.
cse-1994-subject-07-002
Whet are the conservation jaws of elementary particles? How are these applied to Leptons and Baryons?
cse-1994-subject-07-005
What is helicity of a neutrino? How is it measured?
cse-1994-subject-07-004
Describe and experiment that confirms the existence of neutrino.
cse-1994-subject-07-003
Establish the necessary equation for the liquid drop model of a nucleus. How does it explain fission?
cse-1994-subject-07-001
Discuss the gross and fine structure of electronic band spectra of a diatomic molecule.
cse-1994-subject-06-003
Give the theory of vibration-rotation spectra of diatomic molecules. Explain the nature of P, Q, R branches.
cse-1994-subject-06-002
Describe briefly how it is possible to determine the elements present at the surface of a given star.
cse-1994-subject-06-001
Find the energy Ligenvalues of a one dimensional harmonic oscillator whose Hamiltonian is given by H = \frac{P^2}{2m} + \frac{1}{2} k x^2
cse-1994-subject-05-001
A 10 ohm resistor carrying 3 ampere current is cooled by running water so as to keep the temperature at 300 K. Discuss the change in entropy per second (i) of the resistor (ii) of the universe.
cse-1994-subject-04-003
Establish the following relation using Carnot's principle. \frac{dp}{dT} = \frac{JL}{T(V_2 - V_1)} The symbols have usual meanings.
cse-1994-subject-04-004