Infra red radiation sources may be _______________ Options: A . &nbspThermal source B . &nbspNon-thermal source C . &nbspThermal or non-thermal source D . &nbspNone of the mentioned

Infra red radiation sources may be ______________

Question

Infra red radiation sources may be _______________

Options:

A . Thermal source

B . Non-thermal source

C . Thermal or non-thermal source

D . None of the mentioned

Answer: Option C
Answer: (c).Thermal or non-thermal source

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