Solution:If the scale parameter (r) is greater than one (r > 1) the CES production function exhibits in crossing returns to scale.
• The two factor (Capital, labour) CES [constant elasticity of substitution] production function introduced by solow, and later made popular by Arrow, Chenery, minhas, and solow is:-
• V = degree of homogeneity of the production function. Where V = 1 (Constant return to scale), V < 1 (Decreasing return to scale), V > 1 (Increasing return to scale).