Modern Physics

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Lect # 1
Content Covered:

Dual nature of Light, matter-waves, Debroglie’s formula for wavelength of matter-waves. Graphes relating different parameters of Photon and matter waves, example

Duration: 41 Minutes

Lect # 2
Content Covered:

Photometry, Energy of Photon, power incident and Intensity of light assuming particle nature of light, Impulse , Force & Pressure exerted by incident Photons

Duration: 56 Minutes

Lect # 3
Content Covered:

Problems on photometry, motion of Photon under gravity

Duration: 24 Minutes

Lect # 4
Content Covered:

Photo electric Effect, Work function of a metal, Threshold Energy/Threshold frequency/Threshold wavelength of an incident photon, Maximum kinetic energy of photo-electron, Graphs

Duration: 37 Minutes

Lect # 5
Content Covered:

Photo-current, Saturation current, stopping potential, problems

Duration: 50 Minutes

Lect # 6
Content Covered:

graphs plotted by Einstein and conclusions from those graphs, Failure of classical wave theory and explanations given by quantum theory

Duration: 23 Minutes

Lect # 7
Content Covered:

Atomic structure, Dalton’s law, Thomson’s Plums pudding theory, Rutherford’s Atomic model, Bohr’s Atomic model and his 4 postulates

Duration: 24 Minutes

Lect # 8
Content Covered:

Bohr model and Derivations for Radius of orbit, Energy of Orbit, velocity of electron in an orbit, frequency of electron

Duration: 31 Minutes

Lect # 9
Content Covered:

q/m ratio in an orbit,Ground and Excited states, Ionisation Energy and ionisation potential, Excitation Energy and Excitation potential, Binding energy of electrons

Duration: 28 Minutes

Lect # 10
Content Covered:

Hydrogen emission spectrum, Lymen series, Balmer series, Paschen series, Pfund series, series limits

Duration: 38 Minutes

Lect # 11
Content Covered:

Recoil speed of atoms , problems on atomic structure ,Hydrogen absorption spectrum

Duration: 28 Minutes

Lect # 12
Content Covered:

Atomic collisions, problems on atomic collisions

Duration: 27 Minutes

Lect # 13
Content Covered:

Energy and radius of orbit when nucleus in motion.X-ray introduction, Production of X-ray, Types of X-rays, continuous X rays. accelerating voltage

Duration: 41 Minutes

Lect # 14
Content Covered:

Characteristics X-rays, cut-off wavelength, ,K-alpha/K-beta/L-alpha/L-beta characteristics X-rays and their wavelength/ frequency, Mosley’s law ,Graphs and problems on X-rays

Duration: 35 Minutes

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