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Explain quasi-static isothermal expansion
A method is reversible only if it is quasi-static and non dissipative.
E.g. A quasi-static isothermal expansion of an ideal gas in a cylinder fitted with a frictionless movable piston is reversible process.
The fraction of vacancy sites in a metal is 1X10 -10 at 500 0 C. What will be the fraction of vacancy sites at double the temperature?
Q The refractive index of a medium is √3. Compute the angle of refraction if the un-polarised light is incident on it at the polarizing angle of the medium. μ = tan i p = √3
Mention two salient features of immunity theory of ageing. Write the full form of ESR. What does the increase in ESR indicate?
Why does it take longer to heat a bucket of water than a cup of water? Because there is extra water in a bucket than in a cup, and more energy has to be put into the bucket of
Two bodies are moving in circular paths of equivalent radii. If the speed of the first body is twice that of the second, the centripetal acceleration of the first body is how
Q. The work function of a metal surface is 1.8 eV. Compute the threshold wavelength. Work function W = hγ o = h C / λ 0 λ 0 = h C / W = 6.626 X 10 -34 X 3 X 10 8
Definition: The electric field in a region is shown by continues lines (also known as lines of force). Field line is an imaginary line along which a positive test charge will move
how do higher energy levels in our xray beam affect the photoelectric effect
Q. Write any three medical applications of laser. Medical applications (i) In medicine micro surgery has befall possible due to narrow angular spread of the laser beam.
Fun with a pendulum Suspend a hard ball about 8 cm in diameter on a cord over a table. The cord should be at least 1.5 m in length and should be just high sufficient off the ta
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