A meter bridge is set-up as shown, to determine an unknown resistance X using a standard 10 o h m resistor. The galvanometer shows null point when tapping-key is at 52 c m mark. The end-corrections are 1 c m and 2 c m respectively for the ends A and B . The determined value of ′ X ′ is: 10.2 o h m 10.6 o h m 10.8 o h m 11.1 o h m be obtained by heating?