What is joulnal entry for interest accrued and entries at 31/03 and when actual interest is received.

Make sure you include any relevant information. If later you are going to receive the interest, I assume this is an accrual of interest revenue rather than interest expense.

All accrued revenue entries debit a receivable and credit a revenue. ALL. This one does too. An accrued revenue is one that you have earned but have not received yet. If you've earned it, then you have to record the revenue, but since you have not yet received it, it goes into a receivables. You only need to put appropriate names on the accounts, in this case "interest."

When it's received later, it's no different than receiving cash on any receivable: you debit cash and credit the interest receivable.