What are coherent sources ?

Can two sodium vapour lamps act as coherent sources ? Explain in brief.

Why can’t two independent monochromatic sources of light emitting light of one and the same wavelength behave as coherent sources?

A : When the coherent sources are far apart, interference pattern cannot be detected. R : If two point coherent sources are infinitely close to each other, firinges appears very sharp.

Two points nonochromatic and coherent sources of light of wavelength lambda each are placed as shown in figure. The initial phase difference between the sources is zero O. (d gt gt d) . Mark the correct statement(s).

What is meant by coherent sources of light?

A pair of coherent sources may be

Path difference between two wavefronts emitted from coherent sources of wavelength 5460 Å is 2.1 mu m . Phase difference between the wavelength of light emitted by source will be

When two coherent sources interact with each other, there will be production of alternate bright and dark fringes on the screen . Young's double-slit experiment domonstrates the idea of making two coherent sources. For better visibility, one has to choose proper amplitude for the sources. The phenomena is good enough to satisfy the conservation of energy principle. The pattern formed in YDSE is of uniform thickness and is nicely placed on a long distance screen. Law of convervation of energy is satisfied because

When two coherent sources interact with each other, there will be production of alternate bright and dark fringes on the screen . Young's double-slit experiment domonstrates the idea of making two coherent sources. For better visibility, one has to choose proper amplitude for the sources. The phenomena is good enough to satisfy the conservation of energy principle. The pattern formed in YDSE is of uniform thickness and is nicely placed on a long distance screen. For better visibility of fringe pattern

What are the main sources of water?