I am finishing my junior year as a physics major, and I've heard that alot of people get a minor in math or something like that. I plan to start grad school immediately after finishing my undergrad. My question is, what is the purpose of getting a minor? Does it look good on a grad school app? Once I get a higher degree, my undergrad major/minor would be useless wouldn't it... I'm not sure if I should spend the extra money to get a minor if it won't help me. Google must not like me because I couldn't find anything about a minor. Is a minor actually helpful? Thanks in advance.