List of important topics from last 10 years of physics
Answers
Chapter 1 – Electronic Charges and Field
Important Topics:
1. Coulomb’s Law
2. Forces between multiple charges electric field due to system of charges
3. Electric dipole’s electric field on axial and equatorial point
4. Electric dipole in external electric field
5. Gauss’s law applications
MERITNATION TIPS:
a) The mention topics are based on basic Coulomb’s force and electric field due to charges.
Chapter 2– Current Electricity
Important Topics:
1. Ohm’s Law
2. Limitations of ohm’s law
3. Resistivity of different materials
4. Combination of resistors
5. Combination of cells
6. Kirchhoff’s law
7. Meter bridge
8. Potentiometer
MERITNATION TIPS:
a) Definitions and relations of resistance, conductance, resistivity, conductivity, drift velocity, internal resistance, cell EMF are asked for short answers and very short answer very frequently.
b) Graph for resistivity for metals, alloys and semiconductors should be practised.
c) Direct questions are asked every year from the topics
Chapter 3– Electrostatic Potential and Capacitance
Important Topics:
1. Potential due to electric dipole and system of charges 2. Electric potential energy due to electric dipole and system of charges
3. Equipotential surfaces
4. Effect of dielectric on capacitors
5. Combinations of capacitors
6. Energy stored in capacitors
MERITNATION TIPS:
a) The unit provides a good weightage to the numericals and direct derivations, so it is advised that no topic should be skipped.
b) Derivations or topics like energy stored in the capacitors, potential due to electric dipole and potential energy of system of charges are frequently asked.
c) Complex combinations of capacitors are given to evaluate the effective capacitance or charge on plates. Do intensive study of the topic.
Chapter 4 – Moving Charges and Magnetism
Important Topics:
1. Magnetic force on current carrying wire
2. Motion in a magnetic field
3. Velocity selector
4. Cyclotron
5. Magnetic field on axis of circular current carrying loop 6. Ampere’s circuital law
7. Force between two parallel current carrying wires
MERITNATION TIPS:
a) Direct derivations from topics like Magnetic force on axis of circular coil, ampere circuital law, forces between two current carrying wires and torque on current carrying loop in magnetic field are asked
Chapter 5– Alternating Current
MERITNATION TIPS:
a) Make a comparing summary for RC, LC, LR and LCR combinations with their impedances and phase diagrams and other key points. This is the best method to avoid confusion while derivation or solving numericals from the topic.
Chapter 6 – Magnetism and Matter
Important Topics:
1. Axial magnetic field of bar magnet as solenoid
2. Electric dipole in uniform magnetic field
MERITNATION TIPS:
a) It is an easy topic and might not require intensive study but to solve numericals or short answers
Chapter 8 – Electromagnetic Waves
Important Topics:
1. Displacement Current
2. EM waves
3. Nature of em waves
MERITNATION TIPS:
a) Numericals from displacement current are also important. Make a comparison table of all the types of waves in the topic and mark their range in the spectrum and their important properties and uses. This does not requires intensive study but the table will help in answering very short as well as short questions from the topic.
Chapter 9 – Ray Optics and Optical Instruments
Important Topics:
1. Image formation by spherical mirrors
2. Image formation by spherical lenses
3. Total internal reflection
4. Power and combination of lenses
MERITNATION TIPS:
a) All the mentioned important topics are easy, but often students are confused in mirror and lenses and do blunders due to wrong sign conventions. Strictly follow the new Cartesian sign conventions while using mirror or lens formula.
Chapter 10 – Wave optics
Important Topics:
1. Reflection and refraction of plane waves using Huygen principle
2. Incoherent and coherent waves addition
3. Interference and Young’s double slit experiment
4. Diffraction of light
5. Resolving power of optical Instrument
MERITNATION TIPS:
a) Deduction of law of reflection and refraction is an important derivation using Huygens principle is often asked.
Chapter 11 – Dual Nature of Radiation and Matters
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dis answer is from physics lecturer