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Bragg's law (Sir W.L. Bragg; 1912)
While a beam of x-rays strikes at crystal surface wherein the layers of atoms or ions are separated regularly, the maximum intensity of the reflected ray takes place while the complement of the angle of incidence, theta, the wavelength of x-rays, lambda, and the distance among layers of atoms or ions, d, are associated by the equation
2 d sin theta = n lambda,
Where n is an integer.
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
Explain the applications of polarization of light? Write any four applications of interference of light. Illustrate how plane polarized light obtained by reflection.
Is it possible to see your whole body in a flat, planar mirror that is LESS THAN half your height if the mirror is at an angle? (i.e. not parallel to your body)
what does it mean
Two waves of equal frequency have amplitudes 2 units and 3 units respectively. When they superpose coherently the intensity of the resultant wave is I 1 . The intens
FORCE AND NEWTON'S LAWS 1. Ancient view objects tend to stop if they are in motion; force is needed to keep something motion. This was a natural thing to believe in beca
Photomultiplier tube(PTM) it can detect a weak flash of light and estimate the amount of light .The principle of operation (fig(4)) a light photon released electron at the phot
the water flowing over the Niagara Falls drops a distance of 50 m. assuming that all the gravitational energy is converted to thermal energy, by what temperature does the water ris
Does a piece of glass reflect more light than a piece of paper?
In class, we learned that the force on a dipole can be written as F = (p.Δ)E This force can be used to sort particles with no net charge but with a dipole moment in a method cal
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