Electromagnetic spectrum calculation practice problems

Calculate the frequency of electromagnetic radiation that has a wavelength of 329 μm.

Give your answer in Hertz (cycles per second) to 3 significant figures with the most appropriate metric prefix.

Hz

Show equation

C = λ × f

E = h * C / λ

Show constants

C = 3×10⁸ms^-1

h = Planck's constant = 4.13566733×10^-15 eVHz^-1

Show metric prefix table

Power of 10	Prefix	Symbol
10^-18	atto	a
10^-15	femto	f
10^-12	pico	p
10^-9	nano	n
10^-6	micro	μ
10^-3	milli	m
10⁰	(base unit)
10³	kilo	k
10⁶	mega	M
10⁹	giga	G
10¹²	tera	T
10¹⁵	peta	P
10¹⁸	exa	E

Hint
It is easy to get the right number but be off by or more orders of magnitude. Be sure that all of your numbers are in the same base unit before performing the necessary multiplication and devision. The speed of light is given in m/s and Planck's constant is given in eV/Hz.

Related Content
Illustrations

Electromagnetic Spectrum

Bohr Atom

Features of a wave

Light color, frequency and wavelength illustration

Color, frequency, wavelenght explorer

Problem Sets

Bohr Atom Concept Questions

Features of a wave concept questions

Search form

Subscribe to our YouTube Channel:

Follow @SciencePrimer
Tweet

Contact SciencePrimer

Latest Illustrations

Pressure Gradient Force

Mitosis and Cytokinesis

Exponential Patterns and Large Numbers

Cell Cycle

Adenosine Triphosphate