Wave Motion
1. progressive wave equation derivation
2. Differentiate between Progressive & Stationary wave
3. Differentiate between Light & Sound Wave
Mechanical Wave
1. Newton's formula for the velocity of sound
2. laplace correction
3. sound travel faster in hydrogen than oxygen. Why?
4. sound travel from a distant source is heard at night, not during day hours. Why?
Waves in Pipes and String
1. Describe the various mode of vibrations of the air column in a closed organ pipe.
2. End correction, harmonics, resonance definition
3. Differentiate between free & force vibrations.
4. Overtone definition
5. law of transverse vibration of the string
6. why is the sonometer box hollow from the inside?
Acoustic phenomena
1. Doppler effect
2. apparent frequency derivation
-when the source moves towards the observer and the observer moves away from the source.
- when the observer moves towards the source at rest.
Nature & Propagation of the light
1. Huygens Principle Statement.
2. Assumptions of wave theory proposed by Huygens
3. wavefront and wavelets (definition/difference between)
4. Spherical, Cylindrical, Plane wavefront (definition/difference between)
5. Reflection & Refraction
Interference
1. what do you mean by coherent sources of light?
2. Derive the fringe width from Young's double slit.
3. Interference definition, path difference, the phase difference
4. show that the width of the bright fringe is equal to the width of the dark fringe.
5. can 2 different bulbs, similar in all respects, act as coherent sources?
Diffraction
1. Fresnel's & Frauhnhoffer's Diffraction (Difference between + Definition)
2. Difference between Interference & Diffraction.
3. Diffraction of light definition, Diffraction grating definition
4. Conditions for secondary minima & maxima in single slit diffraction.
Polarization
1. What is the polarizing angle? Does it depend on the wavelength of light used?
2. State Brewster's law & what is the polarization of light.
3. Difference between polarised and unpolarized light.
4. Is polarization possible for longitudinal waves. Explain?
5. Significance of Polarization
6. Polaroids and Uses
7. Can Sound waves be polarised? Explain.
