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Calculation of number of atoms per unit cell
The number of atoms per unit cell occurs on the crystal structure and the kind of basic elements (basis or pattern unit or motif) that form the crystal. For instance: The number of atoms in a simple cubic (SC) crystal is one in the case of polonium. The number of atoms in a body centred cubic (BCC) crystal is two in the case of sodium.
When a pulse is reflected from a free side, then there is no changing of medium. Crest (C) represents as crest (C) and trough (T) denotes as trough (T), Time changes by zero and
Problem The work done by a force as it acts on an object equals the force times the displacement times the cosine of the angle between the force and displacement vectors. a
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
The density of neutrons is of the order: (1)10 3 kg/ cc (2)10 6 kg/cc (3)10 9 kg/cc (4) 10 11 kg/cc Ans:(4) 10 11 kg/cc
A battery and the plug points in the switch boards home give potential difference. What is the disimilar in the nature of the current given by the two? Compare and contrast the tw
Q. Cart on Track which consists of a vertical circular loop? Here we have a cart on a track which consists of a vertical circular loop. Of course we don't want the cart to fall
Energy is transmitted in a plane in two mutually perpendicular directions. Example : Wave propagating on the surface of water.
which circular path in any time in any mation
Electromagnetic waves: Electromagnetic waves with different ranges of frequency constitute an electromagnetic spectrum. Electromagnetic waves are transverse in nature. Visible
Q. A beam of electrons travelling with a speed of 4 X 10 7 ms -1 is projected normal to a magnetic field of B = 10 -3 Wb m -2 . What is the path of the beam in the magnetic fiel
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