Hello Vadivu,
I guess, you cannot hide a page if it is blank. We can hide a subform, but not the page, once it is triggered. It is better to find, why that extra page is coming and fix it accordingly. For example, if you have table and has a table footer.
Say for example, your table rows, came up to last row of page and you have 0.5 inch left at end. Table footer, is of height 1 inch, but content is only 0.5 inch. so, it will appear like an extra blank page is triggered but, actually additional 0.5 inch blank space in footer is triggering the additional page.
thanks,
rakesh