Visitor Visa also known as B2 Visa is used to people for tourism, treatment procedures or other activities and stay their temporarily. The length of the stay depends on the Port of Entry approved by the officials of the Consulate. Generally, your duration at the US cannot extend more than six months. Once in the country, you can apply for an extension for another six months it is under the discretion of the officials.
For applying to this visa, you need to have a valid passport and need to submit a complete application form, along with appropriate documentation. After submission, you need to appear for the Visa interview at the Consulate in India. There are few restrictions for this visa, few of then are that you cannot pursue any job opportunity in the country nor can you be involved in any business activity. With this visa, you cannot opt for any academic programs in the country.