I am currently a junior Materials Science and Engineering major at a top engineering university, and have done research in a very physics-based materials science lab for the past two years. I love this research, and plan to continue in the field for graduate school, but I am realizing more and more that I will need to strengthen my physics background significantly.
I have the option to double major in physics, which I can also use as part of the requirements for the honors program I am in, but it will mean taking an extra year to graduate (5 years instead of 4).
I am honestly OK with taking a bit more time in undergrad., as I have had a wonderful experience so far, but I want to be sure it is not frowned upon by top graduate schools (in either MatSE or Applied Physics) that I am taking 5 years instead of 4. Is this usually the case?