Refraction of Light and Electromagnetic Spectrum Quiz

What happens to the speed of light when it passes from a rarer medium to a denser medium?

• It increases
• It decreases
• It remains the same
• It fluctuates

In total internal reflection, what is the relationship between the angle of incidence and the critical angle?

• Angle of incidence is less than critical angle
• Angle of incidence is equal to critical angle
• Angle of incidence is greater than critical angle
• Angle of incidence is irrelevant

Which color of light has the highest speed in a vacuum?

• Red
• Green
• Violet
• All colors travel at the same speed

What is the primary use of a prism in optics?

• To absorb light
• To reflect light
• To separate white light into its component colors
• To increase light intensity

Which type of electromagnetic radiation has the shortest wavelength?

• Radio waves
• Microwaves
• X-rays
• Gamma rays

What is the effect of infrared radiation on objects?

• It cools them down
• It has no effect
• It heats them up
• It changes their color

Which electromagnetic wave is primarily used for satellite communication?

• Radio waves
• Microwaves
• Infrared
• Ultraviolet

What phenomenon causes the appearance of water on hot desert roads?

• Reflection
• Refraction
• Total internal reflection
• Diffraction

What happens to the frequency of light as it passes from one medium to another?

• It increases
• It decreases
• It remains the same
• It fluctuates

Which color of light has the highest refractive index?

• Red
• Green
• Blue
• Violet