6 months ago on
Now Google Mobile Search Results Started Showing Images in the Snippets
Google is now started showing image in the mobile search results for select queries.
It is visible in the product based queries where the user might find an image of the product which they search in the Google.
Actually Google was testing this back in August 2016 and also in December 2014. But now it seems to be visible to all the mobile users.
Here are some screen shots of how they look in the mobile search results.