A. Free electrons
B. Free atoms
C. Free molecules
D. Free solids

Correct Answer: Option A

A. Free electrons

Explanation

– Conduction is explained in terms of the free electrons.
– Convention is explained in terms of the movement of the fluid involved.
– Radiation is explained in terms of invisible electromagnetic wave

SEE ALSO  A student found out from a simple pendulum experiment that 20 oscillations were completed in 38 seconds. What is the period of oscillation of the pendulum?

Copyright warnings! Do not copy.