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Atoms Test - 7...

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  • Question 1
    1 / -0

    In accordance with the Bohr’s model, find the quantum number that characterises the earth’s revolution around the sun in an orbit of radius 1.5 × 1011 m with orbital speed 3 × 104 m/s. (Mass of earth= 6.0 × 1024 kg.)

  • Question 2
    1 / -0

    Average angle of deflection of α -particles by a thin gold foil predicted by Thomson’s model is

  • Question 3
    1 / -0

    Probability of backward scattering (i.e., scattering of α -particles at angles greater than 90∘) predicted by Thomson’s model is

  • Question 4
    1 / -0

    It is found experimentally that for small thickness t, the number of α-particles scattered at moderate angles is proportional to t. What clue does this linear dependence on t provide?

  • Question 5
    1 / -0

    In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of α -particles by a thin foil?

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