The concave lens is the one on the right. The image is: virtual erect (the same way up as the object) diminished (smaller than the object) nearer to the lens than the object and located at a distance from the lens less than the focal length.. It's virtual, upright and reduced.
Snooker tables are considerably larger than pool or billiard versions, their height is somewhat reduced and the pockets are smaller. Because this cue game utilizes higher number of smaller balls, these differences come as natural. The standard dimensions of a snooker table utilized in Europe are 12Ã6 feet.
When you play your first game of snooker, the size of the table and the narrow pockets might intimidate you. Additionally, the corners of the rails are rounded, making it extremely difficult to run a ball down the rail to pocket it.