Which colour of the light has the longest wavelength?
A
violet
B
red
C
blue
D
green
Step-by-Step Solution
Visible Spectrum Range: The visible spectrum of light ranges from violet to red.
Wavelength Comparison: According to the standard values given in the NCERT text, violet light has the shortest wavelength (~400 nm) and the highest frequency, while red light has the longest wavelength (~750 nm) and the lowest frequency .
Order: The order of increasing wavelength is Violet < Blue < Green < Red.
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