Railway tracks made of steel are laid in winter with small gaps between consecutive rails
PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
Railway tracks made of steel are laid in winter with small gaps between consecutive rails. Which statement best explains the purpose of providing these gaps?
(a) To provide space for the accumulation of dust and debris
(b) To allow the rails to contract on cold days without developing tensile cracks
(c) To allow the rails to expand on hot days without buckling
(d) To accommodate the thermal expansion of sleepers rather than the rails themselves