A resistance wire connected in the left gap of a
metre bridge balances a 10 Ω resistance in the
right gap at a point which divides the bridge wire
in the ratio 3 : 2. If the length of the resistance
wire is 1.5 m, then the length of 1 Ω of the
resistance wire is :
(1)`` 1.0×10^{-2} m``
(2) 1.0×10-1 m
(3) 1.5×10-1 m
(4) ``1.5×10^{-2}`` m