Question:
The part of the electromagnetic spectrum to which 2.7 K belongs is
The part of the electromagnetic spectrum to which 2.7 K belongs is
Updated On: May 10, 2024
- radio
- microwave
- X-ray
- y-rays
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The Correct Option is B
Solution and Explanation
Using the relation $\lambda_m\,T=0.29 cm K$ ( Wien's displacement law)$\lambda_m=\frac{0.29}{T}=\frac{0.29}{2.7}=0.11 cm$
Part of the e.m. spectrum for this wavelength is 'microwave'.
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Concepts Used:
Electromagnetic Spectrum
The term used by scientists to describe the entire range of light that exists is the electrostatic spectrum. Light is a wave of alternating electric and magnetic fields. The propagation of light doesn't vary from waves crossing an ocean. Like any other wave, light also has a few fundamental properties that describe it. One is its frequency. The frequency is measured in Hz, which counts the number of waves that pass by a point in one second.
The electromagnetic waves that your eyes detect are visible light and oscillate between 400 and 790 terahertz (THz). That’s several hundred trillion times a second.