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Manipal Entrance Test 2015 Physics Paper

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Question : 2

Total: 50

If levels 1 and 2 are separated by an energy E2−E1, such that the corresponding transition frequency falls in the middle of the visible range, calculate the ratio of the populations of two levels in the thermal equilibrium at room temperature.

1.1577×10−38
2.9×10−35
2.168×10−36
1.96×10−20

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