Pooja, there is no maximum educational qualification for applying for bank jobs. For example, if you take SBI PO, the eligibility criteria is that you should have a Bachelor's degree and you should not be less than 21 years and not older than 30 years. And then there is also age relaxation for Reserved Categories. So if you have a Master's degree in Physics, you do not become ineligible. Infact,  if you meet the age eligibility criteria, you are eligible for applying for Bank jobs.