Interference event is observed in

What are coherent sources of light? Why no interference pattern is observed when two coherent sources are very for apart?

What are coherent source of light? Why no interference pattern is observed when two coherent source are too close

Interference was observed in interference chamber where air was present, now the chamber is evacuated and if the same light is used, a careful observer will see ......

Interference was observed in interference chamber when air was present. Now, the chamber is evacuated and the same light is used. A careful observer will see:

Interference was observed in interference chamber when air was present, now the chamber is evacuated and if the same light is used, a careful observer will see

Interference was observed in interference chamber, when air was present. Now the chamber is evacuated, and if the same light is used, a careful observer will see