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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.
is motion of a ball on a smooth surface an example of uniform velocity? is motion of a ball on a rough surface an example of variable velocity? is a car moving on a straight path
A spectrometer is required for creating pure spectrum of a source in laboratory and measuring of ? of material of prism and ? of a transparent liquid. It has of three parts: Col
GM counter
Shockley, Brattain and Bardeen won a Nobel Prize for what small invention? Ans: Shockley, Bardeen and Brattain won a Nobel Prize for small invention of transistor.
Q. Evaluate Diameters of Bright and Dark Newtons Rings? Let ‘R' is the radius of curvature of a Plano-convex lens resting at a glass plate PQ. If t be the thickness of air film
Example like or unlike parallel forces
A body moves along x-axis with velocity v at position x. If the plot v-x is an ellipse with major axis 2A and minor axis 2u, what is the modulus of maximum acceleration?
1 Volt : Potential difference among two points will be 1 volt if 1 joule of work is needed to move a +ve charge of Coulumb from 1 point to another.
A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma
give a example
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