Question based on Interference and Young's Double Slit Experiment (YDSE)

Youngs Double Slit Experiment

In Young's double slit experiment

In Young's double slit experiment:

In young' double slit experiment

Wave Front|Young Double Slit Experiment

Young's Double Slit Experiment||Discussion -01

Do you think that interference pattern in Young's double slit experiment is the consequence of the superposition of the diffracted waves from the two slits?

How would the angular separation of interference fringes in Young's double slit experiment change when the distance of separation between slits and screen is doubled ?

What is the effect on the interference pattern in Young's double slit experiment if following operations are performed?