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Electromagnetic waves are transverse waves; that means magnetic vector and electric vector, propagation vector are perpendicular to each other. Prove the statement mathematically.
Two forces P & 2P act on the particle if the first is doubled & the second enhanced by 20N.The direction of the resultant remains unchanged. What is the value of P.
How is radiation emitted from the body? The body radiates energy by thermal conduction by the skin to the air, clothes, etc, around the body. A small amount of energy would als
Give reasons for the following (i) Long distance radio broadcasts use short-wave bands. (ii) The small ozone layer on top of the stratosphere is crucial for human survival.
What are the Semiconductor Devices? A semiconductor is a material whose conductivity is much less than a conductor (such as copper), but greater than that of an insulator (such
The vapour pressure of a substance at 20.0 o C is 38.1 kPa and its enthalpy of vaporisation is 49.6 kJ mol -1 . Estimate the temperature at which its vapour pressure is 80.0 k
Electrical Properties of Dielectric Material A loss of energy which eventually produces a rise in temperature of a dielectric placed in an alternating electric field is calle
NEGATIVE ACCELERATION OR RETARDATION OF DECLERATION: If velocity of a body is reducing, then its acceleration is said to be negative. The direction of negative acceleration is
When the component simple harmonic motions have dissimilar periodic times: The resultant curve may be attained in this case by dividing the circumferences of the two circles of
Define Polarization of Ideal Gas? Evaluate the electric polarization P of an ideal gas consisting of molecules having a constant electric dipole moment P in a homogeneous exter
What is Parallel-Plate Capacitor Parallel-Plate Capacitor: Device used to keep electrical potential energy and charge. It having of two conducting sheets with equal and oppos
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