Among the given options, wavelength of which colour light is the shortest?
Blue
Red
Green
Yellow
Blue colour light has the shortest wavelength among the given options.
Among red, yellow and blue, blue coloured light has the shortest wavelength.
Which among the following coloured light has the shortest wavelength?
The elements of sets A , B and C are all colours as follows:
A = { Red , Orange , Yellow , Brown } ,
B = { Blue , Yellow , Green , Brown } ,
C = { Black , Brown , White , Grey }
Then, A U B U C is