The wavelength of the visible spectrum is in the range :
- A1300 Å - 3900 Å
- B3900 Å - 7600 Å
- C7800 Å - 8200 Å
- D8500 Å - 9800 Å
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (b) 3900 Å - 7600 Å
Explanation
The human eye sees light with wavelengths from about 3900 Å to 7600 Å (390–760 nm): from violet at the short end to red at the long end.
Shorter wavelengths are ultraviolet and longer ones infrared, both invisible.