⚡ Physics — Understand the Laws That Govern the Universe

Physics is the science of matter, energy, motion, and force — the foundation of every technological invention and natural phenomenon around us.

At Calculation King, you can explore, learn, and solve physics questions step by step.

From simple motion to quantum mechanics, our system helps you understand each concept clearly and logically.

Whether you’re a school student, engineering aspirant, or just curious about how the world works — Physics on Calculation King makes learning easier, faster, and more interactive.

🌍 What is Physics?

Physics is the study of nature — it explains how and why everything moves, behaves, and interacts.

It gives answers to questions like:

• Why do objects fall to the ground?
• How does light travel?
• What causes electricity and magnetism?
• How do planets move around the sun?

Physics connects theory and observation through logic, mathematics, and experimentation.

🔬 Main Branches of Physics

⚙️ 1. Mechanics

Study of motion and forces.

Topics include:

• Laws of Motion (Newton’s Laws)
• Kinematics and Dynamics
• Work, Power, and Energy
• Circular Motion and Gravitation
• Friction and Momentum

Example:
Q: A car accelerates from 0 to 20 m/s in 5 s. Find the acceleration.
A: a=(v−u)/t=(20−0)/5=4m/s2a = (v – u)/t = (20 – 0)/5 = 4 m/s^2a=(v−u)/t=(20−0)/5=4m/s2

💡 2. Thermodynamics

Study of heat, temperature, and energy conversion.

Key topics:

• Laws of Thermodynamics
• Heat Transfer (Conduction, Convection, Radiation)
• Entropy and Internal Energy
• Carnot Engine and Efficiency

Example:
Q: What is the efficiency of a Carnot engine operating between 400 K and 300 K?
A: η=1−(T2/T1)=1−(300/400)=0.25=25%η = 1 – (T_2/T_1) = 1 – (300/400) = 0.25 = 25\%η=1−(T2​/T1​)=1−(300/400)=0.25=25%

⚡ 3. Electromagnetism

Covers electricity, magnetism, and their relationship.

Key concepts:

• Electric Current, Resistance, and Ohm’s Law
• Series and Parallel Circuits
• Magnetic Fields and Induction
• Electromagnetic Waves and Transformers

Example:
Q: Find the current if voltage = 12 V and resistance = 6 Ω.
A: $I=V/R=12/6=2A$

🌈 4. Optics

Study of light, its reflection, refraction, and behavior through lenses and mirrors.

Topics include:

• Reflection & Refraction of Light
• Lenses and Mirrors
• Total Internal Reflection
• Diffraction, Interference, and Polarization

Example:
Q: Find the focal length of a mirror where $1/f=1/u+1/v$, if $u=-10$ cm and $v=20$ cm.
A: $1/f=1/20-1/10=-1/20\Rightarrow f=-20cm$

🔭 5. Modern Physics

Deals with atomic, nuclear, and quantum phenomena.

Topics include:

• Photoelectric Effect
• Atomic Structure and Bohr’s Model
• Radioactivity and Nuclear Energy
• Quantum Mechanics Basics
• Semiconductor Physics

Example:
Q: What is the energy of a photon with wavelength 500 nm?
A: E=hc/λ=(6.63×10−34)(3×108)/(5×10−7)=3.98×10−19JE = hc/λ = (6.63×10^{-34})(3×10^8)/(5×10^{-7}) = 3.98×10^{-19} JE=hc/λ=(6.63×10−34)(3×108)/(5×10−7)=3.98×10−19J

🌌 6. Waves and Sound

Study of vibrations, wave motion, and sound propagation.

Topics include:

• Simple Harmonic Motion
• Frequency, Wavelength, and Velocity
• Resonance and Beats
• Doppler Effect

Example:
Q: A sound wave has frequency 200 Hz and wavelength 1.7 m. Find velocity.
A: $v=f\lambda =200\times 1.7=340m/s$

🧠 Why Learn Physics with Calculation King

• Step-by-step problem solving for numericals and theory-based questions.
• Conceptual clarity — each formula and law is explained logically.
• Supports English, Hindi, Urdu, Spanish, French, Indonesian.
• Perfect for school, college, NEET, JEE, and competitive exams.
• Instant answers for equations, formulas, and derivations.

⚙️ Common Physics Topics Covered

• Motion in One & Two Dimensions
• Newton’s Laws of Motion
• Work, Power, Energy
• Gravitation and Kepler’s Laws
• Rotational Motion
• Fluid Mechanics
• Thermal Physics
• Light and Optics
• Current Electricity and Circuits
• Magnetism and Electromagnetic Induction
• Alternating Current (AC)
• Wave Optics
• Atoms and Nuclei
• Semiconductor Devices
• Every topic is explained through examples, equations, and detailed reasoning.

🎯 Physics in Real Life

Physics is not limited to textbooks.

It explains:

• How airplanes fly (Bernoulli’s Principle)
• How your phone works (Electromagnetism)
• Why the sky is blue (Scattering of Light)
• How electricity powers your home
• How satellites orbit the Earth

Understanding physics means understanding reality — from galaxies to the smallest atom.