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Light from a 100 watt filament bulb is passed through an evacuated glass tube containing sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, we will observe A. D1 and D2 lines of sodium with good intensity B. dark lines where D1 and D2 lines should have been observed C. continuous radiation from the bulb only D. the entire emission spectrum of sodium

Light from a 100 watt filament bulb is passed through an evacuated glass tube containing sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, we will observe
A. D1 and D2 lines of sodium with good intensity
B. dark lines where D1 and D2 lines should have been observed
C. continuous radiation from the bulb only
D. the entire emission spectrum of sodium

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2 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
2 years ago
Dear student

The answer is option a

Regards
Vikas TU
14149 Points
2 years ago
Dear student 
Question is not clear 
Please attach an image, 
We will happy to  help you 
Good Luck
Cheers

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