The Planck length is the length at which
A) quarks are expected to be squeezed out of existence.
B) quantum gravitational effects are expected to become important.
C) electric charge becomes a meaningless concept.
D) strong nuclear force effects between quarks are expected to become important.
E) photons acquire mass and move slower than lightspeed.

Question

Quizplus · Accepted Answer

The Planck length is the scale at which quantum gravitational effects are expected to become significant, marking the boundary where classical concepts of space and time cease to be applicable.

The Planck Length Is the Length at Which