Microwaves have wavelength in the range of
< 10 -12m
1mm to 1m
400 nm to 1 nm
400nm to 700 nm
The wavelength range of the visible spectrum extends from violet (400 nm) to red (750 nm). Express these wavelength in frequencies (Hz). (1 nm = 10−9 m).
The wavelength range of white light is :
(a) 4000 nm to 8000 nm
(b) 40 nm to 80 nm
(c) 400 nm to 800 nm
(d) 4 nm to 8 nm.