Question

Assertion(A): There is a small gap left between the rails of a railway track. Reason (R): Cooling of substances result in contraction.​

Answer 1

Answer:

BOTH ASSERTION AND REASON ARE TRUE BUT R DOES NOT EXPLAINS A.

Explanation:

A SMALL GAP IS LEFT BETWEEN THE RAILS BECAUSE IN SUMMER DUE TO THE HEAT OF THE SUN THE RAILS EXPAND AND FILL THAT GAP.

IN WINTER THE RAILS CONTRACT AND LEAVING A GAP.