Regarding length: The size of the chain ring / cogs does not matter as they all share the same 1/2 inch pitch which matches the chain pitch of both 3/32 and 1/8 chain.

Width of the chain is an issue as you cannot run 3/32 chain on cogs and chain rings that are designed for 1/8 chain although 1/8 chain can be run on chain rings and cogs designed for 3/32.