Apaches will be flying low, tree top level, .. ground cluter will make it hard to hit them ... if pakistan mechanized and infantry units are not equipped with short ranfr manpads, it can be difficult to deal with them ..
US has strategic relation with India, they can buy whatever is on the shelf .. there are few exceptions...
i dont know the difference between us and indian longbows.. will look at it
Indian Army Apaches are command units they wont be the ones directly dealing with Armour ... LCH and Dhruv WSI will be doing the ground work under command of Apache