State one factaor which determines the intensity of light in the phton picture of light?

In the wave picture of light, intensity of light is determined by square of the amplitude of wave. What determines the intensity of light in the photon picture of light.

State the factors, which controls intensity of light, emitted by a LED.

State the factors, which controls wavelength of light, emitted by a LED.

Which of the following is the property of light?

Which of the following is not the property of light?

What will be the intensities of the maxima and minima,when the ligth waves interfering with each other are of the same amplitude?Show that the intensity of the maxima is four times the intensity of light due to each of two slits.