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Question
The adjoining diagram shows the view through the eyepiece of a prism spectrometer with its slit illuminated by the source of light emitting three wavelengths corresponding to yellow (Y), Green (G) and unknown colour (X). The colour at X may be:
The adjoining diagram shows the view through the eyepiece of a prism spectrometer with its slit illuminated by the source of light emitting three wavelengths corresponding to yellow (Y), Green (G) and unknown colour (X). The colour at X may be:
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Solution
The correct option is D Blue
The sequence of colours in the spectrum is violet, indigo, blue, green, yellow, orange, red. From the options, the only possible colour of X is blue.
The sequence of colours in the spectrum is violet, indigo, blue, green, yellow, orange, red. From the options, the only possible colour of X is blue.
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