Protected: Physics | 12 | 1
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CBSE Physics Class 12th Board Question Paper 2019 | SET -3
SECTION — A 1. Distinguished between unpolarized and linearly polarised light. (1) 2. Define the term "threshold frequency", in the context of photoelectric emission. (1)ORDefine the term "intensity" in the photon picture of electromagnetic radiation. 3. How is the drift velocity in a conductor affected with the rise in temperature?…
CBSE Physics Class 12th Board Question Paper 2019 | SET -2
SECTION — A 1. Define the term "threshold frequency", in context of photoelectric emission. (1)ORDefine the term "intensity" in photon picture of electromagnetic radiation. 2. When unpolarised light is incident on the interface separating the rarer medium and the denser medium, Brewster angle is found to be 60 °. Determine…
CBSE Physics Class 12th Board Question Paper 2019 | SET -1
SECTION — A 1. Draw the pattern of electric field lines, when a point charge - Q is kept near an uncharged conducting plate. (1) ⭐ 2. How does the mobility of electrons in a conductor change, if the potential difference applied across the conductor is doubled, keeping the length…
Thermal
Triple Point of Water It is the state at which the three phases of water (Ice, Liquid Water and Water Vapours) co-exist in equilibrium. It occurs at a specific temperature of 273.16 K and specific pressure of 0.46 cm of Hg column. Absolute Temperature Kelvin Temperature Scale is called Absolute…
Solids
Mechanical Properties of Solids Deforming Force - A force which when applied changes the shape and size of the body.Elasticity - The Property due to which a body regains it's original shape and size when deforming force is removed. Plasticity - the property due to which a body does not…
Animations
Wave Motion | Transverse Wave Motion | Longitudinal Combined - Transverse + Logitudinal Stationary Waves / Standing Waves Boundry Effect — Open Boundry / Close Writing https://youtu.be/0mZk2vW5rWU?t=98 Stationary Waves / Standing Waves[Video] https://youtu.be/-gr7KmTOrx0
Waves
Doppler Effect According to Doppler effect, whenever there is a relative motion between a source of sound and listener, the apparent frequency of sound heard by the listener is different from the actual frequency of the sound emitted by the source. The apparent change in the frequency of sound when…
Thermal Peroperties | Test
MM : 12 | Time : 1/2 Hour Q.1 Define coefficient of linear expansion. Also, give its SI unit. (2)Q.2 When 0.45 Kg of ice at 0 ° C mixed with 0.9 kg of water at 55 ° C in a container, the resulting temperature is 10 ° C. Calculate…
Protected: EMW + Communication + Semiconductor | Test
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