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Stefan-Boltzmann law (Stefan, L. Boltzmann):
The radiated power P (it is rate of emission of electromagnetic energy) of hot body is proportional to the radiating surface area, A, & the fourth power of the thermodynamic temperature, T. The constant of proportionality refer to the Stefan-Boltzmann constant. Mathematically specking,
P = e sigma A T4,
Where the efficiency rating e refer to the emissivity of the object.
Prism is a transparent phase rounded by refracting surfaces, like the incident surface and emergent surface (from which light rays emerges) are plane and non parallel
Q State Joule's law of heating? The heat produced in a conductor is (i) Unswervingly proportional to the square of the current for a given R (ii) Unswervingly proportiona
A horizontal power line carries a current of 6110 A from south to north. Earth's magnetic field (86.8 mT) is directed toward the north and is inclined downward at 70 degrees to the
what is electron
Q. As-per to Coulombs Law if two charged particles are repelled with a given force at a distance d by what multiple will the force decrease by if d is increased by 4 times? An
the loop shown at right, with
work done by conservative force on a system is equal to
A boy is standing on an elevator which is travelling downward with constant velocity of 30 meters per second. The boy throws a ball vertically upward with velocity of 10 meter
Q. Illustrate how do you find your body volume using a tape measure? Answer:- Correctly measure a container into which your body will fit comfortably. Previously you recog
A lead bullet moves horizontally with a velocity of 130 ms-1 and embedded into a cement wall after collision. If the specific heat capacity of lead = 130 JKg-1°C-1 and all heat pro
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