1gr8 jus keep them coming guys...
its like i gave for optics
1]if an x ray tube operates at voltage of 10000 volts, find the ratio of the de broglie wavelength of the incident electrons to the shortest wavelength of X rays produced. the specific charge of electron is 1.8 x1011 C/kg
2] the wavelength of first line of lyman series for hydrogen is identical to that of second line f balmer series for some hydrpgen like ion `x`. calculate energies of first four levels of `x`.
3]an imaginary particle has a charge equal to that of an electron and mass 100 times the mass of electron of the electron. it moves in a circular orbit around a nucleus of charge +4e. take the mass of the nucleus to be ∞. assuming that the bohr`s model is applicable to this system.
a] Derive an expression for the radius of nth bohr orbit.
b]find the wavelength of the radiation emitted when the particle jumps from fourth orbit to the second orbit.
4]A 100 W bulb is placed at the centre of a spherical chamber of radius 20 cm. assume that 60% of the energy supplied to the bulb is converted into light and that the surface of the chamber is a perfect absorber. find the pressure exerted by light on the surface of the chamber.
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13 Answers
11) λmin = hc/eV
λde-brog = h/mc
so reqd ration : qV/mc2
= 1.8 X 1011 X 105/ 9x1016
= 0.2 .
12.) R(1- 1/4) = RZ2 (1/4 - 1/16)
=> Z=2
energy of any level : -2.18 X 10-18 Z2/n2
here, Z=2 and n=1,2,3,4.
11sab pink ke liye kyun rote rehta
love concepts, love physics not pink
33[4] beacuse its kalyug.. yaha sab.. fal ki iksha bhi karte hai karm karne ke sath....
1baapre tiit-ans .... forgive [3]
aur kabhi pink nahi magungi [yahan thread me]
