Which museum was the official residence of the russian monarchy until the fall of the czars?

The Winter Palace was an official residence of the Russian sovereign from 1732 until 1917; however, it was their home for little more than 140 of those years. The last Tsar to truly reside in the palace was Alexander II, who ruled from 1855 to 1881, when he was assassinated.

Explanation:

changeable lenses of different focal lengths allow light to enter the camera, which then forms the image on light-sensitive film" is the one among the following statements about working principle behind a basic still camera is true.