MAY 2018 Sub. Code: 4011
M.Sc. MEDICAL PHYSICS EXAMS
FIRST YEAR
PAPER I RADIATION PHYSICS
Q.P. Code 284011
Time Three hours Maximum 100 Marks
I. Elaborate on: x 20 40)
1. What is artificial radioactivity? Explain the methods of production of artificial
radioisotopes.
2. Explain the types of Photon interactions with matter in the energy range used in
Radio diagnostics and Radiotherapy.
II. Write notes on: (10 x 6 60)
1. Rutherford's and Bohr Atomic model.
2. Mass defect and atomic binding energy.
3. Mutual induction and self induction.
4. Laws of radioactive disintegration and derive the equation for the number of
atoms present at any instant.
5. Radio-active equilibrium.
6. Define Curie and Becquerel and the relationship between the units.
7. Write the relationship between exposure, kerma and absorbed dose.
8. The dependence of RBE and OER on LET.
9. Explain the Bragg curve.
10. Continuous slowing down approximation.