Light reaction of photosynthesis occurs inside

In photosystem-$I$,the first electron acceptor is

What is the name of the light-dependent phase of photosynthesis?

When a cell converts light energy into chemical energy,which of the following reactions takes place?

$ATP$ synthesis in chloroplasts and mitochondria is due to a proton gradient across the membrane. Select the correct statements with respect to $ATP$ formation in chloroplasts:
$(a)$ Protons accumulate in the lumen of the thylakoid.
$(b)$ Splitting of water occurs on the inner side of the membrane.
$(c)$ Protons accumulate on the stroma side of the chloroplast.
$(d)$ $NADP$ reductase is located on the stroma side of the membrane.

The membrane of the thylakoids encloses a space called as $......$