USA goods in Indian customs

Hi, I am going to the USA for my office work. I am planning to buy a Mac, ipad, and iphone for me. All for my personal work, not for selling, not for gifts. As I am travelling for office purposes, I'll have my office laptop with me along with an Android mobile. Do you think it will be a problem at the customs office? Will they ask me to pay tax on it? The 3 devices I'm planning to buy, I can open it from the sealed packs and provide bills as well if necessary.