We are developing an iPad application using SDK 4.2. The application was tested using iOS 4.2,4.3 and 5.0. We are planning to submit the application to app store. Is it necessary that the application needs to be developed using SDK 5.0 to get the approval from apple?

Hi and welcome to the Forum!

Sit tight and someone will be along who can answer your question, in the meantime:

The IPad Forum is a community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the Ipad. There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions you have. If then you cannot find the answer you are seeking then by all means post your question. There are many friendly and informed members here only too willing to help you.

We also have our own App - It is a very simple app to navigate.
http://itunes.apple.com/us/app/discu...412896524?mt=8
Reading the IPad manual is a great place to start so please download a copy of these.
http://www.support.apple.com/manuals/ipad/
2 very informative threads from which you will learn many tips and shortcuts for the IPad.
http://www.ipadforums.net/ipad-gener...dont-know.html
iOS5 Tips and Tricks
We have rules like any Community so please read these also
Forum rules - everybody please read!!

Once again we welcome you here and are so pleased you have joined us!

it's not necessary,
i developed my apps using SDK 4.2 and now i got approval from apple 2day ago.