Could you help me understand why you need an
interpretation of Indian law in this case?
I understood that US Copyright laws would be applicable on Wikimedia Commons as the
servers are in the US.
My understanding is that it needs both home (place where the work is
first published) and US laws to apply. Had the document been a work of
US government (federal), there would be no trouble.
PD-India along with evidence of it being PD in the US would be needed
for hosting on Wikimedia Commons.
best wishes
Shyamal