Explanation:

The Parliament of India is bicameral. The concurrence of both houses is required to pass any bill. However, the authors of the Constitution of India visualized situations of deadlock between the upper house i.e. Rajya Sabha and the lower house i.e. Lok Sabha.

Therefore, the Constitution of India provides for Joint sittings of both the Houses to break this deadlock. The joint sitting of the Parliament is called by the President and is presided over by the Speaker or, in his absence, by the Deputy Speaker of the Lok Sabha or in his absence, the Deputy-Chairman of the Rajya Sabha.

As of now there have been 4 joint session in Parliament of India. However, only 3 bills have been passed.

 1. Dowry prohibition Act, 1961

2. The Banking service commission Act(Repeal), 1978

3. Prevention of terrorism Act(POTA), 2002.

4. Women Reservation, 2008 (no bill passed).