Hi Visvanath,
Thank you for the response.
I am using the Edumy theme and I want to show the language menu on the login page and home page. when anyone comes to the site he/she can change the language before login into the site.
Edumy is a premium commercial theme for Moodle that includes technical support. Have you contacted Cocoon with your question? Please share their response as I am sure it would be helpful to others.