Waves and Reflection

While conducting a physics experiment, Daniel shines a light on a mirror. What is the law of reflection that governs this scenario?

• The angle of incidence is greater than the angle of reflection.

• The angle of incidence is less than the angle of reflection.

• The angle of incidence is not related to the angle of reflection.

• The angle of incidence is equal to the angle of reflection.

When David throws a ball at a wall and it bounces back, what is this phenomenon called?

• reflection

• diffraction

• absorption

• refraction

Sophia is conducting a physics experiment and needs to measure the angle of incidence. What is the angle of incidence in this context?

• The angle of incidence is the angle between the incident ray and the normal to a surface at the point of incidence.

• The angle of incidence is the angle between the incident ray and the refracted ray.

• The angle of incidence is the angle between the normal to a surface and the reflected ray.

• The angle of incidence is the angle between the incident ray and the reflected ray.

When Mia shines a flashlight on a mirror, what is the angle of reflection?

• The angle of reflection is always 90 degrees.

• The angle of reflection is greater than the angle of incidence.

• The angle of reflection is equal to the angle of incidence.

• The angle of reflection is unrelated to the angle of incidence.

Ethan shines a flashlight on a mirror and notices that the angle at which the light hits the mirror is the same as the angle at which it reflects off the mirror. Is this observation true or false: The angle of incidence is always equal to the angle of reflection?

• Sometimes

• True

• False

• Not always

Kai, Daniel, and Elijah are observing a wave in a water tank. They notice that the wave reflects off the wall of the tank. What happens to the wavelength of the wave when it reflects off the wall?

• The wavelength remains the same.

• The wavelength becomes zero.

• The wavelength becomes longer.

• The wavelength becomes shorter.

Abigail, Kai, and Oliver are studying the properties of waves in their physics class. They conducted an experiment where a wave reflects off a surface. What happens to the frequency of the wave in this scenario?

• Frequency remains unchanged

• Frequency increases

• Frequency decreases

• Frequency becomes zero

Abigail, Aria, and Elijah are conducting a science experiment. They want to know which types of waves can be reflected. Can you help them?

• Only sound waves can be reflected

• All types of waves can be reflected

• Only light waves can be reflected

• Only mechanical waves can be reflected

Ethan is studying the behavior of light waves. He is trying to understand what the normal line is in relation to the incident and reflected waves when a light beam hits a mirror. Can you help Ethan understand this?

• The normal line is a line parallel to the mirror at the point where the light beam hits.

• The normal line is a line that intersects the mirror at a 45-degree angle where the light beam hits.

• The normal line is a line tangent to the mirror at the point where the light beam hits.

• The normal line is a line perpendicular to the mirror at the point where the light beam hits.

Benjamin, Elijah, and Ethan are experimenting with a laser in their physics class. They shine the laser at a mirror and observe the beam of light that is reflected. What is the relationship between the angle at which they shine the laser (the incident angle) and the angle at which the light is reflected (the reflected angle)?

• They are equal.

• They are random.

• They are parallel.

• They are perpendicular.