Depending on the radiating properties, body will be transparent when
(Where a = absorptivity, p = reflectivity, x = transmissivity)

Question

Depending on the radiating properties, body will be transparent when (Where a = absorptivity, p = reflectivity, x = transmissivity)

RRB Paper · Accepted Answer

A body that allows heat radiation to pass through it is called a Diathermanous Body(diathermic or diathermal body).

A body’s behavior with regard to thermal radiation is characterized by its transmission τ, absorption α, and reflection ρ.

A transparent body is one that transmits all the radiation that reaches it. That is

P = 0, x= 1, and a = 0

P = 0