Light Waves Amplify

What is the principle behind the amplification of light waves in a laser?

• Stimulated emission

• Spontaneous emission

• Absorption

• Reflection

Tags

NGSS.HS-PS4-5

Which component in a laser is responsible for amplifying light waves?

• Optical cavity

• Lens

• Prism

• Diffraction grating

Tags

NGSS.HS-PS4-5

In the context of light amplification, what does the term 'population inversion' refer to?

• More electrons in excited states than in lower energy states

• Equal number of electrons in excited and lower energy states

• More electrons in lower energy states than in excited states

• No electrons in excited states

Tags

NGSS.HS-PS4-3

Which of the following is a common application of light wave amplification?

• Fiber optic communication

• Thermal imaging

• X-ray imaging

• Magnetic resonance imaging

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

What is the role of a gain medium in a laser?

• To amplify light by stimulated emission

• To focus light

• To reflect light

• To absorb light

Which of the following best describes a laser?

• A device that amplifies light through stimulated emission

• A device that absorbs light

• A device that reflects light

• A device that refracts light

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

What is the effect of light wave amplification on the coherence of the light?

• Increases coherence

• Decreases coherence

• No effect on coherence

• Randomizes coherence

In a laser, what is the purpose of the optical cavity?

• To amplify light by multiple reflections

• To absorb light

• To disperse light

• To change the color of light

Tags

NGSS.HS-PS4-5

Which of the following materials can be used as a gain medium in a laser?

• Ruby

• Glass

• Plastic

• Wood

What is the significance of the term 'monochromatic' in the context of laser light?

• Single wavelength

• Multiple wavelengths

• No wavelength

• Changing wavelength

Tags

NGSS.HS-PS4-3