Electromagnetic Waves Quiz

What happens to a charged particle when it is accelerated?

• It becomes neutral.

• It generates a magnetic field.

• It stops moving.

• It loses its charge.

Which of the following is NOT a type of electromagnetic wave?

• Gamma rays

• Sound waves

• Microwaves

• X-rays

How does temperature affect the electromagnetic waves emitted by an object?

• Higher temperature decreases wave energy.

• Temperature has no effect on wave energy.

• Higher temperature increases wave energy.

• Temperature only affects visible light.

What is the term for waves that have a chaotic shape and vibrate in all directions?

• Polarized waves

• Non-polarized waves

• Rectilinear waves

• Circular waves

How do polarizers work in 3D cinema technology?

• They reflect light in all directions.

• They absorb all light.

• They increase the brightness of the image.

• They allow only one polarization of light to pass.

Why is the sky blue according to the scattering phenomenon?

• The sun emits only blue light.

• The atmosphere absorbs all colors except blue.

• Blue light is scattered more than other colors.

• Red light is scattered more than blue light.

What happens when two waves with opposite phases meet?

• They amplify each other.

• They cancel each other out.

• They change direction.

• They increase in speed.

What is the result of shining light on a conductive material like a mirror?

• The light is absorbed completely.

• The light is refracted only.

• The light is reflected.

• The light changes color.

What is the Cherenkov effect?

• A phenomenon where light slows down in a vacuum.

• A flash of light when particles exceed the speed of light in a medium.

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

• The absorption of light by a black hole.

What occurs when light passes through a medium and changes direction?

• Reflection

• Absorption

• Diffraction

• Refraction