(a)Ultraviolet rays have a wide range of wavelengths from 100 \(\overset{\circ }{\mathop{A}}\,\) to 4000\(\overset{\circ }{\mathop{A}}\,\)
(b) Visible rays have a wide range of wavelengths from 4000 \(\overset{\circ }{\mathop{A}}\,\) to 8000\(\overset{\circ }{\mathop{A}}\,\)
(c) Infrared rays have a wide range of wavelengths from 8000 \(\overset{\circ }{\mathop{A}}\,\) to 10000000\(\overset{\circ }{\mathop{A}}\,\)