IOM’s MBBS entrance exam covers 30 marks from Physics which includes important chapters such as mechanics (8 marks), heat & thermodynamics (3 marks), waves & optics (6 marks), electricity & magnetism (7 marks) and modern physics (6 marks). So, it is very important to cover all chapters from Physics to score high marks in IOM’s MBBS entrance exam.
However, these chapters are vast and have lots of contents, you don’t need to cover everything but it is always better to have a piece of extra knowledge. When preparing for physics for MBBS entrance exam, you have to cover the following topics and core concepts related to it.
Mechanics
up to 8 arks
Mechanics is very important topics in physics which deal with the motions and its properties:
- Fundamental Physical quantities
- Units and dimensions, Vectors addition and subtraction, Scalar and Vector products of two vectors.
- Kinematics
- Velocity and speed, Acceleration-velocity-time graph; equation of motion with uniform acceleration; projectile motion. Newton’s laws of motion, the principle of conservation of linear momentum, work done by a constant and variable force, energy and power, potential and kinetic energy, conservative and non-conservative forces, conservation of energy, renewable and non-renewable sources of energy, elastic and inelastic collision.
- Circular motion
- Centripetal force, centrifugal force and its applications.
- Gravitation
- Newton’s laws of gravitation, a variation of acceleration due to gravity, gravitational field intensity, gravitational potential, potential energy in a gravitational field, geostationary satellites, orbital velocity, parking orbits, potential and kinetic energy of satellites, escape velocity.
- Rotational motion
- Kinetic energy due to rotational motion, torque and couple, work done by a torque, moment of inertia; angular momentum and its conservation, K.E. of a rolling object.
- Simple Harmonic Motion
- simple pendulum, oscillating systems, spring and mass, P.E. and K.E. in oscillating systems.
- Elasticity
- molecular theory, stress, strain, Hook’s law, Young’s, shear and bulk moduli, energy stored in a stretched wire, force in a bar due to contraction or expansion
- Surface tension
- molecular theory of surface tension, surface energy, excess pressure inside a spherical liquid surface, angle of contact and capillary action.
- Viscosity
- streamline & turbulent flows, velocity gradient, Newton’s formula, coefficient of viscosity, Poiseuille’s formula, Stoke’s law, methods of determination of coefficient of viscosity.
Heat & Thermodynamics
up to 3 marks
- Heat and temperature
- thermal equilibrium, heat capacity, the principle of calorimetry, cooling laws, latent heat. thermal expansion of solid, liquid and gas, thermal stress, barometric correction, absolute temperature, kinetic theory of gasses, ideal gas equation.
- Transmission of heat
- conduction, temperature gradient, conductivity, convection, radiation, black body, Wien’s displacement law, Stefan’s law, Kirchhoff’s law.
- Hygrometry
- relative and absolute humidity, phase diagram and triple point.
- Thermodynamics
- heat and work, internal energy, the first law of thermodynamics, heat capacities of a gas, isothermal, isobaric, isochoric and adiabatic processes, second law of thermodynamics, Carnot’s cycles, entropy.
Waves & Optics
up to 6 marks
- Reflection at a plane and curved surfaces
- refraction at plane surfaces, refractive indices, lateral shift, critical angle, total internal reflection and its applications including optical fiber, refraction through a prism, converging and diverging lenses, lens maker’s formula and combination of lenses, defects of vision, correcting lenses.
- Dispersion of light
- white light spectrum, dispersive power, chromatic aberration, an achromatic combination of lenses, optical instrument: spectrometer, visual angle, angular magnification, simple and compound microscope, prism binoculars, astronomical and terrestrial telescopes.
- Photometry
- luminous flux, luminous intensity, illuminance, Lambert’s cosine law and photometers.
- Wave motion
- free, damped and forced oscillation, resonance, longitudinal and transverse wave motion, Progressive wave: velocity of transverse wave in a stretched string, velocity of a longitudinal wave in a fluid, velocity of sound in air, Laplace’s correction, effect of temperature, pressure and humidity on the velocity of sound, principle of superposition; stationary waves, waves in pipes, strings and rods, intensity and intensity level, loudness, pitch and quality, noise pollution; beats, Doppler’s effect. electromagnetic waves: electromagnetic spectrum, Huygen’s wave theory, reflection and refraction of light wave, interference of light, coherent sources, optical path difference, phase difference, constructive and destructive interference, Young’s double slits experiment; diffraction of light: Fresnel and Fraunhofer diffraction, Single slit Fraunhofer diffraction, Polarization of light; Malus’ law, Brewster’s law and Polaroid.
Electricity & Magnetism
up to 7 marks
- Electrostatics
- electrostatic field; Coulomb’s law, electric field, electric flux, Gauss’s theorem, potential energy, electric potential, potential gradient, action of points, Van de Graaf’s generator, capacitors, combination of capacitors, action of dielectric, relative permittivity and dielectric strength, energy of a charged capacitor, charging and discharging of capacitors.
- Electric current
- metallic conduction, potential difference, Ohm’s law, Ohmic and non-ohmic conductors. resistance: resistivity, the combination of resistors, Kirchhoff’s laws and its application, the heating effect of electric current, Joule’s laws, thermoelectric effect, thermocouple, chemical effect of electric current, electrolysis, Faraday’s laws.
- Magnetic field
- lines of forces, magnetic field due to current, Biot Savart law, Helmholtz coils, the magnetic moment of a current loop, Ampere’s theorem, the force on conductor: force on moving charges, Hall effect, magnetic materials, magnetization, susceptibility, permeability, domain theory, hysteresis, dia, para and ferromagnetism.
- Electromagnetic induction
- self-induction, mutual induction, energy stored in the magnetic field of a coil. A.C. and D.C. generator, RMS value and the peak value of the A.C. current; A.C. through L, R and C in series; power in A.C. circuit; transformer.
Modern Physics
up to 6 marks
- Electron
- Millikan’s oil drop experiment, gaseous discharge, cathode rays; motion of an electron in an electric field and magnetic field, thermionic emission of electrons, the specific charge of an electron (e/m), cathode ray oscilloscope, photons: photoelectric effect.
- Atoms
- Bohr’s theory of H-atom; energy levels; excitation and ionization energies; production of laser; its properties and uses, production of X-rays; properties and uses of X-rays; de Broglie’s wave. Nucleus: atomic number; mass number and isotopes; mass-energy relation; mass defect and binding energy. Radioactivity: properties of alpha, beta and gamma rays, G.M. tube; absorption of beta particles and gamma rays; laws of radioactive disintegration; half-life and mean-life; artificial disintegration; nuclear reaction; nuclear fission and fusion; radioisotopes; radiation hazards and safety measures.
- Electronics
- conductor, semiconductor and insulator, junction diode, rectifier, transistor, CE amplifier
These are the necessary topics you need to prepare for IOM’s MBBS entrance exam and all materials cover the +2 HSEB courses or below. However, it is always better to have more knowledge.