- 07/05/2019 at 8:36 pm #1355825EduGorillaKeymasterSelect Question Language :
A beam of ultraviolet light of all wavelengths passes through hydrogen gas at room temperature, in the x-direction. Assume that all photons emitted due to electron transitions inside the gas emerge in the y-direction. Let A and B denote the lights emerging from the gas in the x and y directions, respectively.
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Some of the incident wavelengths will be absent in A.
Only those wavelengths will be present in B which are absent in A.
B will contain some visible light.
B will contain some infrared light.
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