Why does the demand for foreign …

The demand for foreign currency fall and supply rises when its price rises because domestic goods become cheaper. It induces the foreign currency to increase their imports from the domestic country. When the price of the foreign currency increases, this implies that the domestic currency has increased in terms of the foreign currency.in other words, it means that the domestic currency has depreciated.
For example, if price of 1US dollar rises from Rs 53 to Rs 59, it implies that exports to US will increase as Indian goods will become relatively cheaper. It will raise the supply of US dollars.

The demand for foreign currency fall and supply rises when its price rises because domestic goods become cheaper. It induces the foreign currency to increase their imports from the domestic country. When the price of the foreign currency increases, this implies that the domestic currency has increased in terms of the foreign currency.in other words, it means that the domestic currency has depreciated. 

For example, if price of 1US dollar rises from Rs 53 to Rs 59, it implies that exports to US will increase as Indian goods will become relatively cheaper. It will raise the supply of US dollars.