Which example most effectively illustrates the dual nature of light?

a. cameras that use photographic film

b. solar panels

c. radio antennas

d. burglar alarms

must be sure about your answer

The answer is A. Cameras that use photographic film. 
Light has both properties of a wave and a particle.Light can be treated like a wave, but its energy is distributed in discrete packets called photons. Light can appear in different wavelength -- the greater the wavelength, the lesser energy it emits. This explains the existence of color! A chemical change occurs in the photographic detectors that are coated on the film when the energy in the photon of light hits the film. This process is called photochemistry. 

The purpose of a lab is to do your "expirements" the importance of the topic is so you can now what the story is about and the last one is because no one is me with my question ( what is 3 over 4 x - 9 = 27 maybe you can )