Q. The study of physical phenomenon at low temperatures (below liquid nitrogen temperature) is called
A) Refrigeration
B) Radiation
C) Cryogenics
D) Pyrometry
Explanation
(c) Production and measurement of temperature close to $0\ K$ is done in cryogenics
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.