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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.
different combination of pipe material, insulation material and it size.
production of pure spectrum
Q. The kinetic energy of an electron 120 eV. Compute the de Broglie wavelength of electron. λ = h / √2mE λ = 6.626 X 10 -34 / √ 2 X 9.1 X 10 -31 X 120 X 1.6 X 10 -19
Which of the following colours of visible light has the longest wavelength? Is it: a) Violet b) Green c) Yellow d) Red Ans: Red colour of visible light h
What is the difference between diffraction and interference? Diffraction is the bending of waves around an obstacle, whereas interference is the meeting of two waves. For exam
Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be:
Alternatives to prevent tuberculosis - Another possible regimen for treatment of latent TB is daily rifampin alone for 4 months, which may be useful in persons intolerant to is
By what percentage should the pressure of a given mass of gas be increased,so as to decrease its volume by 10% at a constant temperature.
Anti ferromagnetic materials such as chromium have a small but positive susceptibility. They cannot possess any magnetization is the absence of an applied field, in contrast to fer
Explain electric lawn-mower A television set having a power rating of 120W and electric lawn-mower of power rating 1 kW are both linked to a 240V supply. If 3A, 5A and 10A
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