If the kinetic energy of an electron is 100 eV, ...
If the kinetic energy of an electron is 100 eV, what is the wavelength of the de-Broglie wave associated with it? [h = 6.6 x 10\(^{-34}\) J s, e = 1.6 x 10\(^{19}\)C, m\(_{e}\), = 9.1 x 10\(^{-31}\) kg]
1.22 x 10\(^{-10}\)m
4.10 x 10\(^{-10}\)m
3.90 x 10\(^{-10}\)m
5.50 x 10\(^{-14}\)m
Correct answer is D
de broglie wavelength formula in terms of kinetic energy:
λ = \(\frac{h}{\sqrt{2mE}}\)
λ = \(\frac{6.6 *10^{-34}}{\sqrt{2 *9.1*10^{-31} *100 }}\)
λ = 5.50 x 10\(^{-14}\)m
The period of a 10 kHz radio wave traveling at 10\(^{8}\) ms\(^{-1}\) is--...
The process of detecting a pin mistakenly swallowed by a child is X-ray ...
Non-luminous object can be seen because they ...
Which of the following has no effect on radiation? ...
Which of the following type of motion does a body undergo when acted upon by a couple? ...
Which statement is a correct consequence of the uncertainly principle? ...
Which of the following equations for the efficiency of a machine is correct? ...
Which of the following quantities is not an example of force? ...