#WAVE 🔥🔥
⭐ Wave
✔️ Disturbance that transfers energy from one place to another
✔️ No net transfer of matter
⭐️ Wave motion
✔️ Particles oscillate about mean position
✔️ Energy propagates forward

#IMPORTANTTERMS 🔥
⭐ Amplitude (A)
✔️ Maximum displacement from mean position

⭐ Wavelength (λ)
✔️ Distance between two consecutive particles in same phase
📌 Unit = m
⭐ Time period (T)
✔️ Time for one oscillation
📌 Unit = s

⭐ Frequency (f)
📌 f = 1/T
📌 Unit = Hz

⭐ Angular frequency (ω)
📌 ω = 2πf

⭐ Wave number (k)
📌 k = 2π/λ
📌 Unit = m⁻¹


#️⃣ #WAVEEQUATION 💙💙
⭐ General wave equation
📌 y = A sin(kx − ωt)
or
📌 y = A sin(ωt − kx)
where,
⭐ A = Amplitude
⭐ k = Wave number
⭐ ω = Angular frequency


#️⃣ #WAVEVELOCITY
⭐ Wave speed
📌 v = fλ
📌 v = ω/k
⭐ Unit = m s⁻¹
⭐ Dimension = [LT⁻¹]

DOPPLEREFFECT 💙
⭐️ Apparent change in frequency due to relative motion between source and observer
#IMPORTANT
✔️ Source approaches
📌 Frequency increases
✔️ Source recedes
📌 Frequency decreases
#APPLICATIONS
✔️ Radar gun
✔️ Speed measurement
✔️ Astronomy
✔️ Medical ultrasound

#BEATS
⭐ Produced by superposition of two waves having slightly different frequencies
📌 Beat frequency
📌 fb = |f₁ − f₂|
#IMPORTANT
✔️ Number of beats per second = Beat frequency


#DIMENSIONS
⭐ Frequency
📌 [T⁻¹]
⭐ Angular frequency
📌 [T⁻¹]
⭐ Wave number
📌 [L⁻¹]
⭐ Wavelength
📌 [L]
⭐ Wave velocity
📌 [LT⁻¹]

Rain 🌧man problem

Partiality rain ke sath bhi man ko hi prblm 😭😭
Women ke maaje h 👀👀