Showing posts with label Find. Show all posts
Showing posts with label Find. Show all posts

In a copper sample, that drift velocity of electrons in 100 V/m electric field is 2.63m/s. The conductivity of copper is 5.5 x 10-7-1 m-1. Calculate mobility, electron density and relaxation time for electrons (mass of electron = 9.1 x 10-31 kg).

Compton displacement in compton experiment of X-rays at 60o scattering angle is 0.0121 bohr radius. Calculate the planck constant.

Calculate de-Broglie wavelength associated with thermal neutrons at 27oc.

Write the Definition of Temperature of Inversion.

Compare the three statistics namely Maxwell-Boltzmann, Bose Einstein and Fermi-Dirac.

Calculate the work done to twist a steel wire by an angle 45° having radius as 1 mm and length as 25 cm. Modulus of rigidity of steel is 8 × 1011 dyne/cm2.

An ellipse having x = a cos θ and y = b sin θ. Calculate area of the ellipse.

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