Question

All bodies at temperatures above absolute zero degree emit electromagnetic radiation at different wave length", is known as:

Answer 1

Answer :- As per ‘Plank’s law’ all bodies emit electromagnetic radiation at different wave length at temperatures above absolute zero degree.

Plank’s law provides the details of spectral density of electromagnetic radiation in thermal equilibrium. The state here is when there is no net drift of energy or matter between the environment and the body.

Answer 2

All bodies at temperatures above zero degrees emit electromagnetic radiation at different wavelengths, known as Wien's displacement law.

• According to this theory, every object that is warmer than absolute zero emits electromagnetic radiation, and the wavelength of this radiation is temperature-dependent.
• The principle is based on the standard insight that a body's temperature affects the frequency at which it emits light.
• The law is given as - λ_max = b/T.
• Here, λ_max is the maximum emission wavelength, T is the body temperature, and b is a constant known as Wien's displacement constant.
• The concept is frequently applied in the domains of thermodynamics and spectroscopy as it may be used to predict the spectral distribution of the electromagnetic radiation that a body emits at a specific temperature.

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