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Thomson atomic model - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

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The electric field used in Thomson's experiment had a strength of \mathrm{8.0 \times 10^3 N/C.} If a cathode ray particle with a mass of  \mathrm{ 9.11 \times 10^{-31} kg } and a charge of \mathrm{-1.6 \times 10^{-19} C } was deflected by an angle of 30 degrees in the electric field, what was the speed of the particle before entering the field?

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Thomson atomic model

This model was proposed by J.J Thomson in 1898. According to this model, the atom possesses a spherical shape in which a positive charge is uniformly distributed and the electrons are embedded into it in such a manner that it gives the most stable electrostatic arrangement. This model is also known by various names like plum pudding, raisin pudding or watermelon. One important feature of this model is that it could explain the overall neutrality of the atom but it was not consistent with the results of experiments carried out later by different scientists.

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