Prashant ji you are right
The plant uploaded by Balkar ji is N. rustica. Observe short corolla tube, yellow flowers and large sessile leaves.
The plant uploaded by Neil ji is N. tabacum. Note long corolla tube, pinkish flowers and narrow petioled leaves.
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297 Mob: 9810359089