Constitutional Design — Social Studies STD 9 — Question

All the aforesaid provisions came into force from the day We the people of India gave to overselves this Constitution that is from 26th day of November 1949.
And the remaining provisions came into force on 26th of January 1950.
So the Constitution came into force on 26th Of January 1950., while its different provision came into force at two different dates. But since the majority of provisions came into force on 26th of January 1950, the same is the date of coming into force of the Constitution.