The protesters led by Dorjee Tsetan, National Director of Students for a Free Tibet-India, were detained by police as they jumped out of a bus and started shouting slogans against Hu Jintao.
The activists had painted slogans across their chest such as 'Swaraj My Birth Right' and 'Free Tibet'.
The protest was fourth in a series by Students for a Free Tibet (SFT) India.
It took place about an hour before Hu Jintao was to leave for Cambodia after the BRICS Summit.
"Just as the Indians successfully threw off the chains of British rule, we Tibetans are protesting here today for the freedom of our homeland from China's colonial oppression," Tsetan said.
"The dignified mantra of the Indian independence movement 'swaraj is my birth right' rings true for us as we struggle to achieve the right to Tibetan self-rule," he said.
Tibetans were protesting against Hu Jintao's visit to Delhi as part of the struggle for freedom for their homeland.
A group of Tibetans protesters were detained on Thursday from near Taj Palace Hotel where Hu Jintao was attending the BRICS summit.
Around ten Tibetan activists unfurled the flag on a foot-over-bridge on San Martin Jose Road, less than a kilometre from Taj Palace where Hu Jintao was attending the summit along with Prime Minister Manmohan Singh and others.
On Wednesday, a group of Tibetans attempted to storm the Oberoi Hotel.
A 27-year-old Tibetan died two days ago after setting himself ablaze during a protest against Hu Jintao.