Question

Which of the following statements is true of classical physics?
A. It is no longer applicable in solving physics problems.
B. It is an approximation of quantum physics on larger scales.
C. It is necessary to describe the motion of objects at the molecular level.
D. It is more useful than quantum physics for objects moving at extremely fast speeds.

Answer 1

Statement B is true.

Classical physics deals with the problems at macro levels whereas quantum physics at micro level. In classical physics, the position and momentum of a particle is known to us. In quantum physics, these properties of the particles are not measurable to any accuracy.