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MHT CET Physics question

PhysicsAtomsMHT CET

The minimum kinetic energy of a ground state hydrogen atom required to have head-on collision with another ground state hydrogen atom but at rest to produce a photon is given by

Answer: (B)

Solution

In a perfectly inelastic head-on collision half of the kinetic energy is lost, so to supply the minimum excitation energy of 10.2 eV () the

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Question ID VK-084805