Restore a web applicaiton using Central Admin in SharePoint 2010

1. Open Central Administration > Home page > Backup and Restore section > click Restore from a backup.
2. The process consists of 3 steps

Step 1

Select Backup to Restore page > from the list of backups > select the backup job that contains the farm or Web application backup > and then click Next

Step 2

Select Component to Restore page > select the check box that is next to the Web application > and then click Next.

Step 3

Select Restore Options page > in the Restore Component section > make sure that Farm\<Web application>appears in the Restore the following content list.

3.      In the Restore Only Configuration Settings section, make sure that the Restore content and configuration settings option is selected.

4.      In the Restore Optionssection, under Type of Restore, select the Same configurationoption. A dialog box appears that asks you to confirm the operation. Click OK

5.      Click Start Restore.