Engineering Physics

Classification of solids on the basis of energy band diagram, Intrinsic and Extrinsic semiconductors. Fermi level in intrinsic semiconductor, semi-conductor conductivity with derivation, P-N junction diode, Zener diode, Light Emitting Diode, Hall effect.

Planck's hypothesis, properties of Photons, Compton effect, De-Broglie's concept of matter waves, Heisenberg's Uncertainty Principle (statement and derivation), applications of uncertainty principle (electrons cannot exists in the nucleus), Time energy Relation.

Motion of electron in uniform transverse electric field and transverse magnetic fields, positive rays, Bainbridge mass spectrograph, Cathode ray oscilloscope: block diagram and working of each block.

Fundamental condition of interference, thin film interference due to reflected light, Newton's ring; equation for radius of bright and dark rings, determination of wavelength, R.I. of medium using Newton's ring. Fresnel and Fraunhofer class of diffraction, plane transmission grating; construction and determination of wavelength of light using grating.

Principle and construction of optical fibre, acceptance angle and acceptance cone numerical aperture, types of optical fibres and refractive index profile, attenuation in optical fibres, different mechanisms of attenuation, application of optical fibres. LASER: spontaneous and stimulated emission of radiation, Characteristics and its applications of LASER, Ruby LASER (Construction and Working).

Continuity equation, Bernoulli's theorem (derivation). Viscosity, liquid flow (streamline and turbulent), Stoke's law, Sabine's formula for reverberation of time, Factors affecting architectural acoustics and its remedies. Ultrasonic waves, Production of Ultrasonic waves (piezo-electric and magnetostriction methods), applications of ultrasonic waves.