SysRecurrence execution

Dear team,

       Greetings for the day, Here i have doubt on batch jobs!

My Question1, I set a batch job at 10:00am but now the time is 9.00am. So how system will run a batch exact at 10:00am and how the system encounter that time? which class and method will execute this batch job?

and

My Question2, How many times that method will execute in a minute?

Thanks

Suresh