Segments with high physical read - oracle database script

SET pagesize 200 setlinesize 120 col segment_name format a20 col OWNER format a10
SELECT segment_name,
       object_type,
       total_physical_reads
FROM
  (SELECT OWNER||'.'||object_name AS segment_name,
                 object_type,
                 value AS total_physical_reads
   FROM v$segment_statistics
   WHERE statistic_name IN ('physical reads')
   ORDER BY total_physical_reads DESC)
WHERE rownum <=10;