Q: how to recived photo from iPad

Hello, gurjeetfrommoradabad.  

Thank you for visiting Apple Support Communities.  

It sounds like you want to sync or receive photos from your iOS devices to your iMac.  There are a couple ways to do this.  You can email the photos, import them, AirDrop or enable iCloud Photo Library depending on what operating systems you are using.  Below you will find the information on the various options available to you.  

Import photos and videos from your iPhone, iPad, or iPod touch to your Mac or Windows PC

Mac Basics: AirDrop lets you send files from your Mac to nearby Macs and iOS devices

iCloud Photo Library FAQ

-Jason H.