spec 2

What is the speed of electromagnetic radiation in a vacuum?

• 299,792,458 m/s
• 300,000,000 m/s
• 150,000,000 m/s
• 3 x 10^8 m/s

The distance between successive crests in a wave is called:

• Frequency
• Amplitude
• Wavelength
• Velocity

Which of the following is NOT a form of electromagnetic radiation?

• X-rays
• Radio waves
• Sound waves
• Visible light

What phenomenon is observed when light passes through a prism?

• Reflection
• Refraction
• Diffraction
• Absorption

The fluctuations in the baseline of a spectrum are referred to as:

• Peaks
• Noise
• Signals
• Interference

To identify sample peaks clear of noise, the intensity of the sample peaks must be at least how many times higher than the noise?

• 2-3 times
• 3-4 times
• 4-5 times
• 5-6 times

What is the purpose of averaging multiple spectra?

• To enhance the peaks
• To reduce noise
• To increase resolution
• To change the baseline

The non-horizontal baseline in a spectrum can be attributed to:

• Sample concentration
• Instrumental factors
• Environmental conditions
• Wavelength of light

What is the primary focus of the sections mentioned in the document?

• Chemical reactions
• Electromagnetic spectroscopy
• Thermal analysis
• Mechanical properties

Who discovered that each pure substance has its own characteristic spectrum?

• William Wollaston
• Joseph von Fraunhofer
• Gustav R. Kirchhoff
• Albert Einstein