Unit 10 – Simple Harmonic Motion & Waves

Examples: 10.1, 10.2

Exercise Problems: 10.1, 10.2, 10.4, 10.9, 10.10

(Pendulum time period, wave speed v = fλ)

Unit 11 – Sound (Very Frequent)

Most Repeated: Speed of sound (v = fλ), Echo / Gounj problems

Examples: 11.1, 11.2

Exercise Problems: 11.2, 11.4, 11.6, 11.9

Unit 12 – Geometrical Optics (Super Important – Red Zone!)

Must-Do: Mirror Formula (1/f = 1/p + 1/q), Lens Formula, Magnification

Examples: 12.2, 12.3, 12.4, 12.6

Exercise Problems: 12.1, 12.2, 12.3, 12.4, 12.9, 12.10, 12.12

Note: 12.10 & 12.12 (Convex Lens) repeat bohat zyada!

Unit 13 – Electrostatics

Most Important: Capacitors in series & parallel combinations

Examples: 13.2, 13.3, 13.4

Exercise Problems: 13.1, 13.2, 13.3, 13.4, 13.7, 13.8

Unit 14 – Current Electricity

Favorite Topics: Power (P = VI), Cost of Electricity Bill (kWh × rate)

Examples: 14.3, 14.4, 14.8

Exercise Problems: 14.3, 14.4, 14.5, 14.8

Unit 18 – Atomic Physics (Almost Every Paper!)

Most Repeated: Half-Life calculations (easy & short)

Examples: 18.2

Exercise Problems: 18.1, 18.2, 18.3, 18.5, 18.9

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