How to find the configuration status of REDO logs files?

I am in the process of moving the redo log files.
Before that I want to find out whether it is set up as duplex or any other configurations.
How to find the REDO log configurations.
Oracle 10g R2
Thank you,
Smith

Example:
Not duplexed redo log - if number of member is 1, then it is not duplexed:
SQL> select group#, members from v$log;
    GROUP#    MEMBERS
         1          1
         2          1
         3          1
SQL> select group#, member from v$logfile;
    GROUP# MEMBER
         1 /u01/app/oracle/oradata/db1/redo01.log
         2 /u01/app/oracle/oradata/db1/redo02.log
         3 /u01/app/oracle/oradata/db1/redo03.log
SQL> alter database add logfile member '/u01/app/oracle/oradata/db1/redo01_2.log' to group 1;
Database altered.
SQL> alter database add logfile member '/u01/app/oracle/oradata/db1/redo02_2.log' to group 2;
Database altered.
SQL> alter database add logfile member '/u01/app/oracle/oradata/db1/redo03_2.log' to group 3;
Database altered.Duplexed redolog
SQL> select group#, members from v$log;
    GROUP#    MEMBERS
         1          2
         2          2
         3          2
SQL> select group#, member from v$logfile;
    GROUP# MEMBER
         1 /u01/app/oracle/oradata/db1/redo01.log
         2 /u01/app/oracle/oradata/db1/redo02.log
         3 /u01/app/oracle/oradata/db1/redo03.log
         1 /u01/app/oracle/oradata/db1/redo01_2.log
         2 /u01/app/oracle/oradata/db1/redo02_2.log
         3 /u01/app/oracle/oradata/db1/redo03_2.log

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