Define critical angle. Explain total internal reflection using a neat diagram.
2. Explain the formation of a mirage.3. Explain the formation of a rainbow.
4. Why does the setting sun appear red?
5. With a neat labeled diagram. Explain the formation of image in a simple microscope.
6. Explain Doppler effect in light. Distinguish between red shift and blue shift.
7. Derive the expression for the intensity at a point where interference of light occurs. Arrive at the
conditions for minimum and zero intensity.
8. Does the principle of conservation of energy hold for interference and diffraction phenomena? Explain briefly
9. How do you determine the resolving power of your eye.
10. State and explain Coulomb’s inverse square law in electricity.
11. Define intensity of electric field at a point derive an expression for the intensity due to a point charge.
12. Derive the equation for the couple acting on a electric field at a point on the axial line of an electric
dipole
13. Derive the expression for combined focal length of two thin lenses put in contact?
14. Write a short note on debroglie`s explanation of Bohr`s second postulate of quantization ?
15. State Gauss’s law in electrostatics and explain its importance
16. Derive an expression for the capacitance of series or parallel plate capacitor
17. State and explain Biot-savart law.
18. Find the magnetic induction due to along current carrying conductor
19. Derive an expression for the magnetic induction at the center of a current carrying circular coil using Biot – savart law.
20. Compare the properties of para, dia and ferromagnetic substances.
21. Obtain an expression for the emf induced across a conductor which is moved in a uniform magnetic field
which is perpendicular to the plane of motion.
22. Describe the ways in which eddy currents are used for advantage.
23. Obtain an expression for t hi heheheebneensnssnsns
Snsmsmkskd
Ejenenmd
Sejejmss
Sjemke
Ss
Jsnsjejdjrj
Krjjrhrbdhsnamaksskskkdmdfbcbhza
Ejejekkekerms of area and length of the solenoid.
24. What are the limitations of Bohr’s theory of hydrogen atom?
25. Explain the different types of spectral series.
26. Describe how a semi conductor diode is used as a half ware rectifier.
27. What is rectification? Explain the working of a full wave rectifier.
28. Distinguish between Zener breakdown and avalanche breakdown .
29. Define NAND and NOR gates. Give their truth tables.
30. Explain the operation of a NOT gate and give its truth table.
31.What are the basic components of cyclotron ?Mention its uses?
32. Write ashort note on Bohr`s postulates of hydrogen atom?
33. Obtain an expression for the mutual induction of two long coaxial solenoids ?