Quiz on Electromagnetic Waves

What is the speed of electromagnetic (EM) waves in a vacuum?

• 150,000,000 m/s

• 300,000,000 m/s

• 450,000,000 m/s

• 600,000,000 m/s

Which property of EM waves allows them to travel through a vacuum?

• They are longitudinal waves

• They carry particles

• They do not need a medium

• They are stationary waves

What phenomenon describes light bending when it passes from one medium to another?

• Reflection

• Diffraction

• Polarization

• Refraction

Which law governs the bending of light when it moves between different media?

• Coulomb’s Law

• Snell’s Law

• Newton’s Law

• Faraday’s Law

What is the primary application of refraction in biological tools?

• Amplifying sound

• Adjusting light intensity

• Focusing light in microscopes

• Absorbing UV light

What is the term for light vibrating in a single plane after passing through a polarizing filter?

• Reflected light

• Polarized light

• Diffracted light

• Refracted light

Which of the following is a use of polarized light in biology?

• Determining protein structure

• Imaging bones

• Correcting eyesight

• Increasing diffraction

What does the Rayleigh criterion determine?

• The maximum wavelength of visible light

• The resolution limit in microscopy

• The minimum size of biological cells

• The speed of EM waves in water

What does spectroscopy measure in a biological sample?

• Electrical resistance

• Light absorption

• Diffraction angles

• Magnetic field strength

In absorption spectroscopy, which component of a sample is typically identified?

• Electrical conductivity

• Light emission levels

• Concentrations of biomolecules

• Sound vibrations