How To Combine Files rar + jpeg

I will show you how to combine file like .rar and .jpg
follow the instruction
first chose a .jpg and .rar file which you want to combine
i used a.jpg and a.rar
then copy and paste both of them to a saparate folder

now open cmd and type

cd "and the path where you paste your .jpg and .rar file"
in my case i use cd c:\new folder
if the above command completed without any error then type

copy /b "your rar file name.rar" + "your jpg file name.jpg" "new file name.jpg"

in my case copy /b a.jpg + a.rar ab.jpg
now see on your folder where you put .jpg and .rar file
when you direct open it it will appear as a picture

and when you open that file as winrar than it is your previous .rar file