Spain's Carolina Marin defeated her 19-21, 21-12, 21-15 in the women's singles final to clinch gold.
Sindhu told NDTV: "Never thought I would make it this far. Overall I am on cloud nine at the moment, this feels amazing."
Sindhu won the second medal for India in the 2016 Olympics after wrestler Sakshi Malik won the bronze medal after a grueling encounter.
Image: twitter.com/virendersehwag
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