Please help me with the physics derivations for class 12 boards 2021 ..please ..its really urgent..
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Answer:
The syllabus of CBSE class 12 physics is vast. It contains a total of 10 units or 15 chapters. It is important for students to know the important topics and derivations in class 12 physics to study efficiently. Given below are the important derivations for class 12 physics.
Electrostatics(Unit 1)
Coulomb’s Law in the form of vectors – F12→=−F21→
Application of Gauss theorem in the calculation of electric field
Electric field intensity due to a thin infinite plane sheet of charge
Electric field intensity of an electric dipole on equatorial line – ER=14πε0Pr3
Electric field intensity of an electric dipole on axial line – E=14πε02Pr2
Electric field intensity due to a uniformly charged spherical shell at various points
The capacitance of a parallel plate capacitor with a dielectric medium
The capacitance of a parallel plate capacitor without dielectric medium
Electric potential due to a point charge – V(r)=Q4πε0r
Current Electricity(Unit 2)
Application of Gauss theorem in the calculation of electric field intensity due to thin infinite plane sheet of charge uniformly charged spherical sphere
The relation between current and drift velocity
An expression for drift velocity
Series and parallel connection of resistors
Magnetic Effect of Current and Magnetism(Unit 3)
Torque experienced by a current loop in a uniform magnetic field
Ampere’s law and its application to an infinitely long straight wire. Straight and toroidal solenoids.
The magnetic dipole moment of a revolving electron
Apply Biot-Savart law to derive the expression for the magnetic field on the axis of a current-carrying circular loop.
Cyclotrons
The force between two parallel current-carrying conductors
Torque on a magnetic dipole (bar magnet) in a uniform magnetic field.
Current loop as a magnetic dipole and its magnetic dipole moment
Force on a current-carrying conductor in a uniform magnetic field
Force on a moving charge in uniform magnetic and electric field.
Electromagnetic Induction And AC(Unit 4)
Self and mutual induction
Derivation of Emf induced in a rod moving in a uniform magnetic field.
Impedance, reactance, and average power in series LCR, LR, LC, or CR circuit.
The relation between peak and RMS value of the current
Derivation for resonance in a series LCR Circuit
Electromagnetic Waves(Unit 5)
Derivation of displacement current
Optics(Unit 6)
Formula for Lens
Refraction at convex surfaces
The formula for Lens-Maker’s
Diffraction using a single slit
Derivation of the refractive index of minimum deviation in the prism
Young Double Slit Experiment
Derivation of the formula for angle of minimum deviation for the prism
Polarisation
Dual Nature of Radiation and Matter(Unit 7)
Derivation of the De-Broglie Relation
The relation between threshold frequency, frequency of the incident photon and cut-off potential
Nuclei and Atoms(Unit 8)
Derive N=N0e−λt
Expression of the radius in hydrogen-like atoms
Electronic Devices(Unit 9)
Common emitter transistor amplifier
Common base transistor amplifier
Communication System(Unit 10)
Frequency modulation and amplitude modulation
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