Answer
Less than
Work Step by Step
We know that $L=L_{\circ} \sqrt{1-\frac{v^2}{c^2}}$. The large value of $L$ in case $c\gt 3\times 10^8m/s$ shows less contraction of the object and a small value of $L$ in case $c=3\times 10^8m/s$ shows more contraction of the object. Thus, we conclude that the effect of the length contraction will be less than that when the speed of light is larger than $3\times 10^8m/s$.
