The Oscillations & Waves Series
Eight exam-ready cards covering the complete chapter for JEE Main, JEE Advanced and NEET — from the bounce of a spring to the redshift of galaxies, every formula explained letter by letter.
Simple Harmonic Motion: The Physics of Every Bounce
SHM = to-and-fro motion where the pull back is proportional to the distance pushed — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Energy in SHM: The Endless Trade, Quantified
Total SHM energy = ½kA² (or ½mω²A²) — fixed by amplitude alone — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Pendulums and Spring Systems: The Clock Catalog
Simple pendulum: T = 2π√(L/g) — length and gravity decide; mass NEVER — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Damping and Resonance: Why Bridges Have Speed Limits
Damping = friction slowly stealing SHM energy — swings decay, period barely changes — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Waves: When Oscillation Goes Travelling
A wave = oscillation that travels, carrying energy (not matter) — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Standing Waves: How Instruments Choose Their Notes
Two identical waves travelling opposite ways lock into a standing pattern — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Beats: When Two Notes Almost Agree
Two close frequencies trade loudness: loud-quiet-loud-quiet = beats — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.
Doppler Effect and the Grand Finale Formula Card
Doppler: relative motion changes the heard frequency — closer = higher, receding = lower — letter-by-letter formulas, graded examples, memory tricks, daily-life anchors.