In the electromagnetic spectrum, if one proceeds from the ultraviolet to the infrared region, what changes are found in the following characteristics of the waves: (i) Wavelength (ii) Frequency (iii) Speed (iv) Transverse nature? OR How can an optical fibre be used to act as an o

Question

In the electromagnetic spectrum, if one proceeds from the ultraviolet to the infrared region, what changes are found in the following characteristics of the waves: (i) Wavelength (ii) Frequency (iii) Speed (iv) Transverse nature? OR How can an optical fibre be used to act as an optical pipe?

Accepted Answer

>

> [!TLDR]
> Wavelength increases, frequency decreases, speed in vacuum is unchanged, and the transverse character of the waves is unchanged, on going from UV to IR across the electromagnetic spectrum.
>
> The electromagnetic spectrum is arranged in order of increasing wavelength (or decreasing frequency) from gamma rays through X-rays, UV, visible, IR, microwaves, to radio waves. Moving from the ultraviolet region towards the infrared region:
>
> (i) Wavelength ($\lambda$) increases (UV has shorter wavelengths, IR has longer wavelengths).
> (ii) Frequency ($
u$) decreases, since $c = 
u\lambda$ is constant and $\lambda$ increases.
> (iii) Speed remains the same — all electromagnetic waves travel at the speed of light $c = 3	imes10^8\,	ext{m/s}$ in vacuum, regardless of wavelength/frequency.
> (iv) Transverse nature is unchanged — every electromagnetic wave, from gamma rays to radio waves, is transverse in nature (oscillating $\vec E$ and $\vec B$ fields perpendicular to each other and to the direction of propagation); this does not change across the spectrum.
>
> OR
> …

Q.In the electromagnetic spectrum, if one proceeds from the ultraviolet to the infrared region, what changes are found in the following characteristics of the waves:

Concept understanding — Characteristics of Electromagnetic Waves

Q.In the electromagnetic spectrum, if one proceeds from the ultraviolet to the infrared region, what changes are found in the following characteristics of the waves:

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