The Euler’s crippling load for a 2 m long slender steel rod of uniform cross – section hinged at both the ends is 1kN. The Euler’s crippling load for a 1m long steel rod of the same cross – section and hinged at both ends will be
(a) 0.25kN (b) 0.5kN
(c) 2kN (d) 4kN