Match the Column-I with Column-II:
Column I | Column II |
(i) An electron moves in an orbit in a Bohr atom | [A] Total Energy= |
(ii) As a satellite Moves in a circular orbit around total earth | [B] Kinetic Energy = Magnitude of Energy |
(iii) In Rutherford's α- scattering experiment, as an α -particle moves in the electric field of a nucleus | [C] Motion is under a central force |
(iv) As an object, released from some height above ground, falls towards earth, assuming negligible air resistance | [D] Mechanical energy is conserved |
Text Solution
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Ans.
(i) [A], [B], [C], [D]
(ii) [A], [B], [C], [D]
(iii) [C], [D]
(iv) [C], [D]
Sol. (i) Total Energy= 
, Kinetic Energy = Magnitude of Energy, Motion is under a central force, Mechanical energy is conserved
(ii) Total Energy= 
, Kinetic Energy = Magnitude of Energy, Motion is under a central force, Mechanical energy is conserved
(iii) Motion is under a central force, Mechanical energy is conserved
(iv) Motion is under a central force, Mechanical energy is conserved
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