Can i show share ebook which i bought to multiple person without enabling them to download ?. So i won't be making multiple copies of the ebook but will be showing it to multiple users. Is there any copyright violation in doing so?
This will depend on the license under which you use the ebook. Some ebooks have a license which explicitly permits such sharing. In the absence of such permission, it will depend on how you plan to provide access to the ebook to those you plan to "share" with. Most ways of sharing would involve making a copy at some point in the process, which you may not do without permission. However, if you remove it from your computer(s) during the time that it is shared, so that it is never accessible on more than one computer or device at any one time, that might well be permissible, although I don;t know of a court case in point.