M.Ed. DEGREE EXAMINATION, MAY 2017
Second Semester
Education
PHYSICS FOR EVERYONE
(2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Write down the postulates of Bohr atom model.
2. Draw the structure of sodium chloride.
3. What is an electromagnetic wave? Mention its different
types.
4. Define polarization.
5. Define decibel and intensity.
6. What is resonance?
7. What is emissivity and emissive power?
8. Define black body radiation.
9. What is direct combustion?
10. List out the applications of solar thermal energy.
Sub. Code
741701
RW-387
2
WK16
Part B x 5 25)
Answer all questions.
11. State and explain Sommerfield's atom model.
Or
State Pauli's Exclusion Principle and its
applications.
12. Discuss the reflection phenomenon by light.
Or
State and explain Huygens principle.
13. Describe free, damped and forced vibration.
Or
Mention the applications of ultrasonic waves.
14. Depict the determination of effect of Temperature
on thermal conductivity of different liquids.
Or
State two dimensional heat equation in cartesian
and spherical coordinates.
15. Explain the principle and functioning of different
types of solar cells
Or
Describe the working of biomass conversion process.
RW-387
3
WK16
Part C x 10 30)
Answer any three questions.
16. Describe the different types of bonding in a crystal.
17. Explain the principle and working of microscope with
suitable diagram.
18. Define reverberation? Deduce Sabine's formula to fmd the
reverberation time.
19. State and deduce Planck's radiation law.
20. List out the different types of biogas plants. Describe the
production of bio diesel and mention its applications.
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