Is there any app which can convert my phone screen into mirrored screen means virtual which when i put in parallel to the mirror gives me orignal image inside a mirror...
Welcome to the forums! If you want to do that for an specific screen or just to take a picture you could use your gallery app. Take a screenshot, go to your gallery, select edit for that pic, search for the 'mirror' option and save as a new picture.
If you want to navigate through screens or menus with a mirrored image I don't know of any app that could do it.
Go to the Play Store and look for 'mirror' - there are a few apps that turn your screen into a mirror (using the front camera). If you're thinking of aiming the camera at a real mirror, however, this won't work - it'll just give you infinite reflections.