Hi Prithula,
I'm very new to Tor but I think this is not possible, unless you
change Tor source code and force it to do it. With one-hop-circuit you
would lose all anonymity. As far as I know Tor needs at least 2 hops
but 3 is much better.
Why do you want a single-hop circuit?
--
Alberto Maria Scattolo
Google profile: http://www.google.com/profiles/thedarkfreesoul