Question

What would the world be like if the Plack's consent =1?

Answer 1

Look for equations where Planck's constant features. For example the energy of ejected electrons

E = hf

if plancks constant were larger, then the kinetic energy of the relased photons would be massive.

Answer 2

if plancks constant were larger, then the more objects that exhibit wave-like properties such as balls, marbles, etc.