If you have a yellow light bulb and a blue one, which emits light of higher frequency?

a. yellow

b. blue

c. all visible light is the same frequency

d. it depends upon how bright the light is

Think roygbiv

red has low intensity and violet has the highest. so blue has the higher intensity which is answer B

and frequency is directly related to intensity. the wavelength of blue is smaller than yellow which means he frequency is higher.