NEW DELHI, Feb 3 (Reuters) - India has agreed to buy petroleum, defence goods, electronics, pharma and telecom products as well as aircraft from the U.S. under a trade deal, a government official told Reuters on ‌Tuesday.

U.S. President Donald Trump announced a trade deal with India on Monday that ​slashes U.S. tariffs on Indian goods to 18% from 50% ‍in exchange for India halting Russian oil purchases ⁠and lowering ⁠trade barriers.

Trump said India agreed "BUY AMERICAN at a much higher level." He said India ‌could buy $500 billion worth of ​U.S. energy, coal, along with technology, agricultural and other products.

The Indian government official, who did not want ⁠to be named, said India ‍has agreed ​to buy U.S. goods to reduce the trade deficit that the U.S. has with India.

India's trade ministry did not ‍immediately reply to an e-mail seeking comment.

India's exports to the U.S. rose 15.88% year-on-year to $85.5 billion in January-November, while imports stood at $46.08 billion, commerce ministry data showed.

"The commitment to buy U.S. products covers sectors like pharmaceuticals, telecom, defence, petroleum and ​aircraft. ‍It will be done over the years," the official told Reuters.

"We have offered market access in some agricultural ​products too," the official said, without giving details.

The official said the deal is the first tranche and a more comprehensive deal will be negotiated over coming months.

Under the deal, India has cut tariffs on automobiles as part of Washington's immediate demand to address the trade imbalance.

The ​announcement lifted investor sentiment on Tuesday.

India's benchmark stock index, the Nifty 50, was up nearly 3% and the rupee climbed over 1% to 90.40 per ‍dollar in early trading.