Laws of Reflection
Physics ⇒ Light and Optics
Laws of Reflection starts at 7 and continues till grade 12.
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See sample questions for grade 12
Describe the difference between regular and diffuse reflection with respect to the laws of reflection.
Describe what happens to the direction of a light ray when it is incident perpendicular to a plane mirror.
Explain why a rough surface does not produce a clear image even though it obeys the laws of reflection.
Explain why the image formed by a plane mirror appears to be the same distance behind the mirror as the object is in front of it, using the laws of reflection.
A light ray strikes a mirror at an angle of 25° to the normal. What is the angle between the incident ray and the mirror surface?
A light ray strikes a plane mirror at an angle of 15° to the normal. What is the angle between the incident ray and the mirror surface?
A ray of light is incident at 30° to the normal. What is the angle between the incident ray and the reflected ray?
A ray of light is incident at 45° to the normal on a plane mirror. What is the total angle between the incident and reflected rays?
Which of the following best describes the law of reflection?
(1) The angle of incidence is always 90°
(2) The angle of reflection is always 0°
(3) The angle of incidence equals the angle of reflection
(4) The incident and reflected rays are always perpendicular
Which of the following is a correct statement about the plane of incidence?
(1) It contains only the incident ray
(2) It contains the incident ray and the normal
(3) It contains the incident ray, the reflected ray, and the normal
(4) It contains only the reflected ray
Which of the following is NOT a requirement for the laws of reflection to hold?
(1) The surface must be perfectly smooth
(2) The incident ray, reflected ray, and normal must be coplanar
(3) The angle of incidence equals the angle of reflection
(4) The point of incidence must be defined
Which of the following is NOT true about the normal in the context of reflection?
(1) It is perpendicular to the surface at the point of incidence
(2) It is parallel to the incident ray
(3) It is used to measure angles of incidence and reflection
(4) It passes through the point of incidence
Fill in the blank: In the law of reflection, the angle of incidence is _______ to the angle of reflection.
Fill in the blank: The angle between the incident ray and the normal is called the angle of _______.
Fill in the blank: The angle of incidence is measured from the normal to the _______ ray.
Fill in the blank: The angle of reflection is measured from the _______ to the reflected ray.
True or False: The angle of incidence and the angle of reflection are measured from the surface of the mirror.
True or False: The incident ray, the reflected ray, and the normal always lie in the same plane.
True or False: The laws of reflection apply to all types of electromagnetic waves, not just visible light.
True or False: The laws of reflection are only valid for visible light.
