title: Regular Expression to find string starts with letter and ends with slash /
body: <p>I'm having a collection which has 1000 records has a string column.</p>
  
  <p>I'm using Jongo API for querying mongodb.</p>
  
  <p>I need to find the matching records where column string starts with letter "AB" and ends with slash "/"</p>
  
  <p>Need help on the query to query to select the same.</p>
  
  <p>Thanks.</p>