Atomic StructureHard
Question
Identify the correct statement(s) :
Options
A.Wavelength associated with the 1 kg ball moving with the velocity 100 m/s can′t be calculated.
B.Wave nature of the running train is difficult to observe because wavelength is extremely small.
C.Wavelength associated with the electron can be calculated using the formulae E = 
D.If an electron is accelerated through 20 V potential difference if it has already 5eV kinetic energy then wavelength of the electron is approximately √6 
.
.Solution
(A) λ can be calculated as : λ = 
= 6.626 × 10-36 m. (very small).
(B) de-Broglie wavelength associated with macroscopic particles is extremely small and so, difficult to observe.
(c) de-Broglie wavelength associated with electron can be calculated by using λ =
.
(D) KEf = 5 + 20 = 25 eV.
∴ λ =
= 6.626 × 10-36 m. (very small).(B) de-Broglie wavelength associated with macroscopic particles is extremely small and so, difficult to observe.
(c) de-Broglie wavelength associated with electron can be calculated by using λ =
.(D) KEf = 5 + 20 = 25 eV.
∴ λ =
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