Class 12 Physics Most Important Questions 2082

 Most Important Questions of Physics Class 12 PDF 
[According to new and revised course 2082]

Class 12 Physics – Most Important Questions [PDF Included] (2082 Syllabus) - Updated as per the latest syllabus. Download link at the end of the article. Includes frequently asked theory, derivations, numericals, and diagrams from past NEB exams.

Why This List Matters?

• Based on analysis of past 10 years' board questions
• Covers both theory + numerical + derivations
• Reflects updated 2082 syllabus
• Includes Model Question insights

Mechanics

• Rotational Dynamics
• Equations of Angular Motion and Linear Motion
• Relation between moment of inertia and torque
• Radius of Gyration
• Moment of inertia of thin uniform rod rotating about it’s centre and it’s one end
• Derivation of rotational kinetic energy
• What is torque? Relation between torque and angular acceleration of a rigid body
• Principle of conservation of angular momentum
• Practise 5,7 Numerical Problems from each chapter

Periodic Motion

• Define SHM, derive expression for energy of the particle in SHM
• Derive the expression of time period for vertical oscillation of  a mass suspended from coiled spring 
• Expression of time period of simple pendulum
• Practise 5,7 Numerical Problems from each chapter

 

Fluid Statistics

• Definition and relation between surface tension and surface energy
• State and Explain Stoke’s Law and use it to find Coefficient of viscosity of given liquid
• Why should the meta Centre Iie above the centre of gravity of a floating body?
• Equation of continuity and its application
• Newton's formula for viscosity of liquid
• Bernoulli's equation and its application

Heat and thermodynamics

• First Law of thermodynamics
• Expression of work done during isothermal process
• 2. Work done during adiabatic process
• 3. Prove : PV ^ (gamma) = constant
• 4. PV diagram of adiabatic and isothermal process

 Second law of thermodynamics

• Define heat engine and its efficiency
• Define internal combustion engine
• Describe the working of a petrol engine with PV diagram
• Describe carnot cycle with PV diagram
• Explain second law of thermodynamics
• Numericals

Wave and optics

• Difference between stationary and progressive wave
• Derivation of stationary and progressive wave
• How are stationary waves formed? (Describe with figure)
• Numericals related to y= a sin theta omega T
• 
  
• Newton's formula of velocity of sound in gas
• Laplace correction
• Factors affecting velocity of sound
• 
  
• Open organ pipe and closed organ pipe
• Resonance tube
• End correction in pipes
• Intensity of sound derivation
• Beat formation
• Doppler’s effect and numericals
• Laws of transverse wave in strings
• 
  
• Young's double slit experiment
• Polarisation / brewster law
• leHyugen’s Principle
• Diffraction through single slit

Also Read: Class 12 Chemistry Important Questions PDF

Electricity and Magnetism

• Kirchoff’s Law and use it to find out the balanced condition of wheatstone bridge
• AC working principle
• Combination of resistors ie. series and parallel
• Shunt 
• Potentiometer and use of Potentiometer
• Conversion of galvanometer into ammeter or Voltmeter
• Joule's law of heating
• Biot Savart law and its application
• Ampere’s law and and its application
•  relation between Drift velocity and current velocity
• Variation of resistance with temperature
• Seebeck effect and Thermocouple 
• Series circuits containing combination of resistance capacitance and inductance
• Choke coil
• Faraday's law of electromagnetic induction
• Lenz law, How is lenz law following conservation of energy?
• Prove: E=Blv 
• Hall effect and hall Voltage law
• Moving coil galvanometer and its application
• EMF induced in a coil rotating in a uniform magnetic field and rectangular coil
• Relative permeability and susceptibility
• Tangent law & ferromagnetism

Modern Physics

• Thomson's experiment to calculate specific charge of an electron
• Bohr's postulates and find the energy of electron of nth orbit 
• Radius of nth bohr’s orbit
• Laws of radioactive disintegration
• Millikan Oil Drop experiment
• Gaseous discharge 
• Full Wave Rectifier
• Einstein's Photoelectric equation