Define interference. List the conditions of obtaining sustained interference.

Interference is

List the conditions necessary for sustained interference.

State one condition for obtaining a sustained interference of light.

interferences of waves

During interference of light

What are the conditions for sound to interfere ?

Interference is possible in

For interference to take place

RNA interference involves

State the importance of coherent sources in the phenomenon of interference. In Young's double slit expet-ment to produce interference pattern obtain the conditions for constructive and destructive interference. Hence deduce the expression for the fringe width. How does the firinge width get affected, if the entire experimental apparatus of Young's is immersed in water ?