Sources 1 and 2 emit lights of different wavelengths whereas sources 3 and 4 emit light of different intensities.
The coherence

What is the difference between coherent and incoherent sources of light?

What are coherent sources of light ?

Two sources of light of intensities I and 4I emit light waves which interfere at a point. Intensity will be ..... At points where the phase difference, is

Two coherent point sources S_1 and S_2 emit light of wavelength lambda . The separation between sources is 2lambda . Consider a line passing through S_2 and perpendicular to the line S_(1)S_(2) . What is the smallest distance on this line from S_2 where a minimum of intensity occurs?

Two coherent point sources S_1 and S_2 emit light of wavelength lambda . The separation between sources is 2lambda . Consider a line passing through S_2 and perpendicular to the line S_(1)S_(2) . What is the smallest distance on this line from S_2 where a minimum of intensity occurs?

A monochromatic source emits light of wavelength 550 nm is emitted by a source . Find the number of photons emitted by the source in 90 seconds if power of source is 60 W.

There aree n identical sources and each of them is emitting light of intensity I_0 .Find the resultant intensity of light on interference,when the sources of light are incoherent.