⚠️ Auditor's Strict Warning: Agar tumhare paas time kam hai, toh puri book padhne ki galti mat karna. Sirf inhi topics par focus karo. [cite_start]Inme se derivations 5 marks aur 3 marks dono me aayengi[cite: 141, 142, 146, 154, 156, 158].
⚡ Unit 1: Electrostatics & Capacitance
▶ Most Repeated Topics
- Derivation
[cite_start]
Gauss's Theorem: Statement and Field due to an infinite plane sheet of charge[cite: 141, 142].
$$ \oint \vec{E} \cdot d\vec{A} = \frac{q_{enc}}{\epsilon_0} \quad ; \quad E = \frac{\sigma}{2\epsilon_0} $$
- Derivation
[cite_start]
Capacitors: Parallel plate capacitor capacitance with/without dielectric [cite: 146] [cite_start]and Potential Energy of a conductor ($U = \frac{1}{2}CV^2$)[cite: 83].
- Trap Alert
[cite_start]
Battery Removal Trap: Dielectric insert karne par agar battery connected nahi hai toh Charge ($Q$) constant rahega, $V$ change hoga[cite: 148, 149, 150, 151]. Diagram is mandatory for Gauss Law.
[Image of parallel plate capacitor with dielectric]
🔋 Unit 2: Current Electricity
▶ Most Repeated Topics
- Derivation
[cite_start]
Drift Velocity ($v_d$): Relation between current and drift velocity ($I = neAv_d$)[cite: 102].
- Numerical
[cite_start]
Cells & Internal Resistance: Terminal voltage calculation ($V = E - Ir$)[cite: 117, 118].
- Derivation
[cite_start]
Wheatstone Bridge: Balance condition ($P/Q = R/S$) using Kirchhoff's laws[cite: 125].
$$ \sum I = 0 \quad (\text{Junction}) \quad ; \quad \sum \Delta V = 0 \quad (\text{Loop}) $$
- Trap Alert
Kirchhoff ke loop rule me sign convention (-IR) galat lena sabse badi galti hai.
[Image of Wheatstone bridge circuit diagram]
🧲 Unit 3 & 4: Magnetism, EMI & Alternating Current
▶ Most Repeated Topics
- Derivation
[cite_start]
Biot-Savart & Ampere's Law: Magnetic field on the axis of a circular current loop[cite: 154]. [cite_start]Statement of Ampere's Law[cite: 86].
- Theory
[cite_start]
Moving Coil Galvanometer: Principle, working, and Current Sensitivity ($I_s$)[cite: 156].
[Image of moving coil galvanometer construction]
- Numerical
[cite_start]
EMI: Self-induction numericals finding induced EMF ($e = -L \frac{di}{dt}$)[cite: 87, 88].
- Derivation
[cite_start]
LCR Series Circuit: Resonant frequency ($f = \frac{1}{2\pi\sqrt{LC}}$) and Average Power ($P = V_{rms} I_{rms} \cos\phi$)[cite: 36, 107, 108].
$$ Z = \sqrt{R^2 + (X_L - X_C)^2} $$
[Image of phasor diagram for LCR series circuit]
🌈 Unit 5 & 6: Ray & Wave Optics
▶ Most Repeated Topics
- Derivation
[cite_start]
Ray Optics: Prism Minimum Deviation formula ($\mu = \frac{\sin[(A+\delta_m)/2]}{\sin(A/2)}$)[cite: 76, 109]. [cite_start]Lens Maker's Formula[cite: 158, 159].
- Theory
[cite_start]
Optical Instruments: Astronomical Telescope ray diagram at normal adjustment and Magnifying power[cite: 126, 127].
[Image of astronomical telescope ray diagram]
- Derivation
[cite_start]
Wave Optics: Huygens Principle (Difference between Interference and Diffraction)[cite: 163]. [cite_start]YDSE Intensity/Amplitude ratio numericals[cite: 164].
⚛️ Unit 7, 8 & 9: Modern Physics & Semiconductors
▶ Most Repeated Topics
- Derivation
[cite_start]
Dual Nature: Einstein's Photoelectric Equation and calculating maximum Kinetic Energy / Work Function [cite: 128, 131][cite_start]. de Broglie momentum ($P = h/\lambda$)[cite: 111].
- Theory
[cite_start]
Atoms & Nuclei: Bohr's Postulates[cite: 132]. [cite_start]Balmer Series wavelength relation[cite: 78]. [cite_start]Binding Energy per nucleon numerical using 1 amu = 931 MeV[cite: 133, 134]. [cite_start]Pair Production[cite: 79].
[Image of binding energy per nucleon curve]
- Theory
[cite_start]
Semiconductors: Energy Band Theory (Conductor, Insulator, Semiconductor)[cite: 165]. [cite_start]Effect of Forward Bias on Depletion Layer[cite: 167]. [cite_start]Full-Wave Rectifier circuit and working[cite: 168, 169].
- Trap Alert
Binding energy me amu ko seedhe Joule me badalne me time waste mat karna. [cite_start]931 se multiply karo aur MeV me answer likho[cite: 133, 134]. Rectifier me diodes ke current ka path load resistance me same direction me hona chahiye.
🏆 How to use this list: Ek printout nikalo. Har roz inme se 2 derivations bina dekhe rough copy me likho aur uske proper diagram banao. UP Board ka 90% paper (Long answers aur 3-markers) inhi specific points ke ird-gird ghumega. Physics ratne ka subject nahi hai, likh kar practice karne ka hai!