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.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Describe the difference between regular and diffuse reflection.
Describe what happens to the direction of a light ray when it strikes a plane mirror at an angle of 0° to the normal.
Explain why a rough surface causes diffuse reflection rather than regular 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.
A ray of light is incident on 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 on a plane mirror at an angle of 25° to the normal. What is the angle between the incident and reflected rays?
A ray of light strikes a plane mirror at an angle of 70° to the mirror surface. What is the angle of reflection?
A student shines a laser beam at a plane mirror so that the angle of incidence is 45°. What will be the angle between the incident and reflected rays?
Which of the following best describes the angle of reflection? (1) The angle between the incident ray and the mirror surface. (2) The angle between the reflected ray and the normal. (3) The angle between the incident ray and the normal. (4) The angle between the reflected ray and the mirror surface.
Which of the following is an example of diffuse reflection? (1) Reflection from a polished mirror (2) Reflection from a calm pond (3) Reflection from a white wall (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 incident ray and reflected ray are always perpendicular. (4) Reflection occurs at the surface of separation between two media.
Which of the following is NOT necessary for the laws of reflection to hold? (1) The surface must be smooth. (2) The incident ray, reflected ray, and normal must be in the same plane. (3) The angle of incidence must equal the angle of reflection. (4) The surface must be a mirror.
Fill in the blank: In regular reflection, all reflected rays are __________ to each other.
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 __________ to the incident 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 mirror surface.
True or False: The angle of reflection can be greater than 90°.
True or False: The incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane.
True or False: The laws of reflection apply only to plane mirrors.
