it won't be mentioned in the cash book because it's a cheque in hand entry right?

Solution:
If cheque received and deposited to bank on same day than it will be recorded in the bank column of receipt side but if the cheque received and not deposited to bank on same day than it will be assumed as cash received and recorded in cash column of receipt side whereas on the day it is deposited in bank we pass contra entry that in cash column of payment side and bank column of receipt side.