Laws of Reflection
Physics ⇒ Light and Optics
Laws of Reflection starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Laws of Reflection.
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See sample questions for grade 10
Describe the path of a light ray that strikes a plane mirror at an angle of 0° to the normal.
Describe what happens to the direction of a light ray when it strikes a mirror at an angle of 45° to the normal.
Describe what happens to the reflected ray if the angle of incidence is increased.
Explain the difference between regular and diffused reflection.
Explain why a rough surface does not produce a clear image even though it reflects light.
A ray of light is incident at 40° to the normal. If the mirror is rotated by 10° while keeping the incident ray fixed, by how much does the reflected ray rotate?
A ray of light is incident on a plane mirror at 30° to the normal. If the mirror is rotated by 5° in the direction of the incident ray, what will be the new angle of reflection?
A student shines a light ray at a mirror and measures the angle of incidence as 50°. What should the angle of reflection be according to the laws of reflection?
Which of the following best describes the normal in the context of reflection? (1) A line parallel to the surface (2) A line perpendicular to the surface (3) A line at 45° to the surface (4) A line along the incident ray
Which of the following is a correct statement about the normal? (1) It is always parallel to the incident ray. (2) It is always perpendicular to the surface at the point of incidence. (3) It is always at 45° to the surface. (4) It is always parallel to the surface.
Which of the following is an example of diffused reflection? (1) Reflection from a calm lake (2) Reflection from a rough wall (3) Reflection from a polished mirror (4) Reflection from a glass window
Which of the following is NOT a law of reflection? (1) The angle of incidence equals the angle of reflection. (2) The incident ray, reflected ray, and normal lie in the same plane. (3) The angle of incidence is always 90°. (4) Reflection occurs at the point of incidence.
Fill in the blank: The angle between the incident ray and the normal is called the __________.
Fill in the blank: The angle between the incident ray and the reflected ray is __________ times the angle of incidence.
Fill in the blank: The angle of incidence is measured from the __________ to the incident ray.
Fill in the blank: The angle of reflection is the angle between the reflected ray and the __________.
True or False: The angle of incidence and the angle of reflection are measured from the surface of the mirror.
True or False: The angle of reflection can be greater than the angle of incidence.
True or False: The incident ray and the reflected ray can lie in different planes.
True or False: The incident ray, the reflected ray, and the normal always lie in the same plane.
