CultureGrams is an excellent source for images. From the main country page, go to "Photo Gallery," where you can choose and download a relevant image. You can choose "Generate citation" to create an MLA citation for the image (be sure to double-check and make sure that there are no errors!).
Search Flickr to find images that are protected by a Creative Commons license. These images are generally free to use and share for educational purposes, but you still need to cite your source and credit the creator! A simple search on "India" yields many beautiful images. (Once you've clicked on an image, click the "Some rights reserved" link in the bottom right-hand corner of the page to make sure that you aren't violating any restrictions.)