** Modern Physics **

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** Demo Video **

**All Lectures **

**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