Physics by Anoop Swarnkar

Physics by Anoop Swarnkar 12 years experience of physics

10/03/2026
25/02/2026

Graph Ka Area Kya Batata Hai? 😱 | Physics Secret Trick | Class 11 & 12

Physics me jab bhi do physical quantities ke beech graph diya hota hai, toh sirf line dekhna hi important nahi hota — us graph ka area kya represent karta hai, yeh samajhna sabse zaroori hota hai 🔥
📌 Basic Rule:
Agar ek quantity time ke respect me plot ki gayi hai,
toh graph ka area batata hai “total effect over time”.
Important Examples:
🔹 Velocity – Time Graph
Area under the curve = Displacement
Kyuki Velocity × Time = Displacement
🔹 Force – Time Graph
Area under the curve = Impulse
Impulse = Force × Time
Aur Impulse se momentum change hota hai.
🔹 Current – Time Graph
Area = Charge
Kyuki Current × Time = Charge
🔹 Power – Time Graph
Area = Work Done / Energy
🔹 Acceleration – Time Graph
Area = Change in Velocity
💡 Important Concept:
Agar graph straight line hai toh triangle/rectangle ka area nikalo.
Agar curve hai toh approximate area ya integration ka concept use hota hai (Higher classes me).
🎯 Board Exams me is concept par direct numericals aate hain.
Agar aap graph ka area samajh gaye, toh Physics ke numericals 50% easy ho jate hain!






GraphTrick
VelocityTimeGraph
ForceTimeGraph
NumericalTrick
PhysicsConcept
ScienceShorts
StudySmart
ExamPreparation
ImpulseConcept
Displacement
CurrentElectricity
AccelerationGraph
LearnPhysics
ViralShorts
EducationalShorts

11/02/2026

1 Formula → 5 Marks 💯 | Telescope Numericals Shortcut

Aaj ke iss short me hum Astronomical Telescope ke numericals ko bilkul basic se samjhenge — bina ratta maare, sirf concept + shortcut se 🔭✨

👉  Magnifying Power = fo / fe
         M = 144/6 = 24 Ans

👉  Length of telescope L = fo + fe = 144 + 6 = 150 cm

🎯 Is short ko dekhne ke baad aap:
✔ Telescope numericals 10–15 sec me solve kar paoge
✔ Formula yaad rakhne ki zarurat nahi padegi
✔ Board exam me direct 3-5 marks confirm
Ray Optics ka ye topic har saal exam me aata hai — ek baar concept clear, toh question guaranteed! 🚀
📚 Class 12 Physics | Boards | NEET | JEE Foundation


BoardExam StudySmart MagnifyingPower NEETPhysics JEEPhysics
ScienceConcept LearnPhysics ExamPreparation PhysicsTrick

10/02/2026

Capacitor Charging & Discharging in 10-second ⚡ | RC Circuit Made Easy (Class 12 Physics)

Is detailed video me hum capacitor ke sabse important aur confusing topic ko bilkul zero level se samjhenge — bina ratte, sirf concept se!
🔋 Jab capacitor ko ac se connect karte hain to kya hota hai? • t = 0 par current maximum kyu hota hai? • Capacitor wire jaisa behave kyu karta hai? • Dheere-dheere current zero kaise ho jata hai?
⏱ Time Constant (τ = RC) ka real meaning: 1τ → 63% charge
2τ → 86% charge
3τ → 95% charge
5τ → Almost fully charged
⚡ Discharging me kya hota hai? • Battery hatate hi capacitor khud battery ban jata hai • Voltage aur current exponential tareeke se decrease hote hain • Stored energy heat me convert hoti hai
📈 Graphs ko bina yaad kiye samjho: Charging → Voltage increase, Current decrease
Discharging → Voltage decrease, Current decrease
📚 Important formulas explained: Vc = V(1 − e⁻ᵗ/ᴿᶜ)
Vc = V e⁻ᵗ/ᴿᶜ
I = (V/R)e⁻ᵗ/ᴿᶜ
U = ½CV²
🎯 Is video ke baad aap: ✔ Graphs identify kar paoge
✔ Numericals solve kar paoge
✔ Boards / NEET / JEE me galti nahi karoge
Yeh video specially Class 12 students ke liye banayi gayi hai jisse pura RC Circuit lifetime ke liye clear ho jaye.
physicslecture neetphysics jeephysics boardexam2026 currentelectricity physicsconcepts education studyphysics

09/02/2026

Dielectric डालते ही Capacitance इतना क्यों बढ़ गया? 🤯 | Class 12 Physics Numerical

क्या आपने notice किया है कि capacitor में dielectric material डालते ही उसकी capacitance अचानक कई गुना बढ़ जाती है? 🤔
यह कोई magic नहीं बल्कि electrostatics का बहुत powerful concept है।
इस short में हम एक important Class 12 numerical solve करते हैं:
Initial capacitance C₀ = 8pF
Dielectric constant K = 2
Formula: C = K C₀
Dielectric डालने पर plates के बीच electric field कम हो जाता है क्योंकि dielectric molecules polarization पैदा करते हैं।
यह polarization external electric field को oppose करता है → potential difference कम हो जाता है → और capacitor ज्यादा charge store करने लगता है।
यही कारण है कि capacitance बढ़ जाती है।
Calculation करने पर: C = 2 × 8 = 16 pF
यानि सिर्फ एक material डालने से capacitor की charge storing capacity 2 गुना बढ़ गई 😱

यह concept Boards, NEET और JEE में बार-बार पूछा जाता है — खासकर theory + numerical mix questions में अगर आपको electrostatics आसान language में सीखना है तो channel subscribe जरूर करें 🔔

PhysicsNumerical NEETPhysics JEEPhysics BoardExamPreparation ScienceConcepts PhysicsShorts

class 12 physics, physics, dielectric effect, dielectric, capacitor theory, electrostatics concepts, dielectric material, physics numericals, dielectric materials, capacitance increase, capacitance, dielectric constant, physics problems, electrostatics, dielectric theory, capacitance calculator, capacitor, dielectric properties, Neet, capacitance formulas, physical numericals, dielelectric materials, dielectric calculations, capacitance tips

08/02/2026

Kirchhoff’s Current Law (KCL) Numerical | Junction Current Trick in 30 Seconds ⚡

Is Short me hum Class 12 Physics ka ek bahut hi important concept samjhenge — Kirchhoff’s Current Law (KCL).
Question: Ek junction par 3 currents enter kar rahe hain: 5A, 8A aur 10A
Aur 3 currents junction se bahar ja rahe hain: 6A, 8A aur I
Toh missing current I ki value kya hogi?

🔹 Concept:
Kirchhoff’s Current Law kehta hai:
“Kisi bhi electrical junction par total incoming current = total outgoing current”
Yaani charge conserve hota hai — current kabhi bhi junction par rukta ya gayab nahi hota.
Jitna charge per second node me aata hai utna hi bahar nikalta hai.

🔹 Mathematical Solution:
Incoming currents = 5A + 8A + 10A = 23A
Outgoing currents = 6A +8A + I = 14 A + I
According to KCL:
23A =14 + I
I = 23A - 14A = 9A
✔️ Missing current = 9 Ampere

🔹 Important Exam Point:
Agar kabhi answer negative aaye → current opposite direction me flow kar raha hota hai (galti nahi hoti, direction change hota hai)

🔹 Real Life Understanding:
Junction ko road traffic signal samjho 🚦
Jitni gaadiyan chauraha par aayengi utni hi dusri roads me nikal jayengi — koi gaadi hawa me gayab nahi hoti!

Ye concept circuit solving, network analysis aur board exams me bahut baar direct poocha jata hai.

Aise aur easy numericals ke liye channel follow karo — Physics ko simple banayenge!

08/02/2026

Kirchhoff’s Current Law (KCL) Numerical | Junction Current Trick in 30 Seconds ⚡

07/02/2026

Aag Me Bhi Nahi Phoota Balloon 😱 | Specific Heat Magic

06/02/2026

लहरदार टिन शेड का असली राज 😳 | 90% लोग गलत जानते हैं!

05/02/2026

🎯3 COMMON MISTAKES in Board Exams(Physics) - Marks Directly Cut ❌️

05/02/2026

Boyle’s Law Explained with Balloon 🎈🔥

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