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J.J.Thomson's atom model is also called ...

J.J.Thomson's atom model is also called as ______

A

Plum pudding model

B

gold foil

C

alpha particle

D

none

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Write true or false: J.J.Thomson proposed than an atom consists of positively charged sphere in which the electrons are embedded.

Answer the following questions, which help you to understand the difference between Thomson's model and Rutherford's model better. a. Is the average angle of deflection of a-particles by a thin gold foil predicted by Thomson's model much less, about the same, or much greater than that predicted by Rutherford's model? b. Is the probability of backward scattering (i.e., scattering of a-particles at angles greater than 90^@ ) predicted by Thomson's model much less, about the same, or much greater than that predicted by Rutherford's model? c. Keeping other factors fixed, it is found experimentally that for small thickness t, the number of alpha - particles scattered at moderate angles is proportional to t.What clue does this linear dependence on t provide? d. In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of alpha particles by a thin foil?