SCI10_SEATWORK: EM WAVES AND MIRRORS

What is the speed of light in a vacuum, represented by the small letter c?

• 299,792,458 km/s

• 3,000 m/s

• 186,282 miles/s

• 299,792,458 m/s

Which of the following does not belong to the set of visible light applications?

• Television screen

• Radiotherapy

• Projector

• Light Amplification by Stimulated Emission of Radiation

Which of the following does not belong to the set of x-ray applications?

• Computed Tomography Scan

• Detection of skeletal system abnormalities

• Airport scanner

• Remote control

How are the electromagnetic waves arranged in this spectrum?

[Read from left to right]

(Image from: My NASA Data)

• from shortest wavelength, lowest energy, and lowest frequency to longest wavelength, highest energy, and highest frequency

• from longest wavelength, lowest energy, and lowest frequency to shortest wavelength, highest energy, and highest frequency

• from longest wavelength, lowest energy, and highest frequency to shortest wavelength, highest energy, and lowest frequency

• from shortest wavelength, highest energy, and highest frequency to longest wavelength, lowest energy, and lowest frequency

What is ionization?

• The process of removing neutrons from neutral atoms.

• The process of removing electrons from neutral atoms.

• The process of adding electrons to neutral atoms.

• The process of removing protons from neutral atoms.

Which among the following does not belong to the set of the application of radiowaves?

• Radio Detection And Ranging (RaDAR)

• Blacklight

• Wi-Fi

• Global Positioning System (GPS)

Which of the following is not true about the nature of UVA, UVB, and UVC?

• UVC is largely absorbed by the Earth's atmosphere and does not reach the surface in significant amounts.

• UVA is associated with premature aging of the skin and is a major contributor to skin aging and wrinkling.

• Among the three, UVA has the shortest wavelength, followed by UVB, and UVC who has the longest wavelength

• UVB is responsible for tanning and sunburn

Which of the following does not belong to the set in terms of ionization?

• Ultraviolet rays

• Gamma rays

• Visible light

• Infrared waves

What is reflection in the context of light?

• The bending of light as it passes through a medium.

• The bouncing back of light into the same medium it has been traveling after striking a surface.

• The absorption of light by a surface.

• The dispersion of light into its component colors.

The ray that strikes the surface of the mirror is called?

• Reflected ray

• Normal ray

• Striking ray

• Incident ray