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Explain about the Heat Extraction?
a) A body of mass M has a temperature-independent precise heat C. If the body is heated reversibly from a temperature Ti to a temperature Tf what is the change in its entropy?
b) Two such bodies are primarily at temperatures of 100 K and 400 K. A reversible engine is used to take out heat with the hotter body as a source and the cooler body as a sink. What is the maximum quantity of heat that can be extracted in units of MC?
c) The specific heat of water is C= 402j/g k and its density is 1g/cm3 Calculate the maximum useful work that can be extracted, using as a source 103 m3 of water at 100°C and a lake of temperature 10°C as a sink.
The potential difference across a 4 ohm resistor is 20 volts. Assuming that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are radia
Q. What are antireflection films and interference filters? Ans. Anti reflecting Films: When a beam of light travels normally from a medium of refractive index µ2 to a me
50 gm of an optically active substance is dissolved in 100 ml of water. A plane polarised light, when passing through 30 cm of the solution, suffers a rotation of 390 in it's plane
Hooke's law (R. Hooke): The stress applied on any solid is proportional to the strain it generates in the elastic limit for that solid. The constant of that proportionality is
Vector Addition While we become students of physics and approach the job of adding vector quantities, we soon become aware of the fact in which the addition of two vector quant
1) Clean coal technology describes new electricity generation processes that are expected to have high efficiencies, be able to minimise environmental impacts, including SO 2 , NOx
The earth "spins" (rotates) on its axis based on the action of the materials that accreted to form it, and also on any large collisions it might have undergone. Like the one in the
What is SI unit of force
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
A ray of light is incident on one of the faces of a parallel sided glass slab at an angle of incidence 510 31' of thickness 0.12 m . Evaluate the lateral shift produced given refra
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