I have been asked to submit object and source code for a program (software developed) written in MATLAB.
If this is for a homework or other school assignment, you should probably ask the person who gave you that assignment to clarify what exactly they want you to turn in. I could see if they expected students to implement the assignment in a compiled language like C or C++ they might ask for object and source code (both the executable and the source code you used to generate it.) But that distinction doesn't really apply for MATLAB code. In that case, submitting the MATLAB code may be sufficient -- or the person who assigned you this task may tell you they want you to implement it in C or C++.