Question

If the coefficients of cubical expansion is x times coefficient of superficial expansion, then value of x is:

• A. 3
• B. 2.5
• C. 2
• D. 1.5

Answer 1

Answer: (D)

The relation between cubical expansion and superficial expansion $\beta$ is given by $\frac{\beta }{2}=\frac{\gamma }{3}$ or $\gamma =\frac{3\beta }{2}=1.5\beta$ Hence $x=1.5$