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
A ray of light is incident on a mirror at 60° to the mirror surface. What is the angle of incidence?
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 35° with the normal. What is the angle of reflection?
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?
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.
Explain why you can see your reflection clearly in a calm lake but not in a turbulent river.
If the angle between the incident ray and the reflected ray is 80°, what is the angle of incidence?
State the two laws of reflection.
A light ray strikes a plane mirror and is reflected such that the reflected ray makes an angle of 37° with the mirror surface. What is the angle of incidence?
A periscope uses two plane mirrors placed parallel to each other. If the angle of incidence at the first mirror is 45°, what is the angle of reflection at the second mirror?
A plane mirror is rotated by 20° about an axis in its plane. If a light ray is incident on the mirror before rotation at an angle of incidence of 30°, by how many degrees does the direction of the reflected ray change after the rotation?
A ray of light is incident on a plane mirror such that the angle between the incident ray and the reflected ray is 110°. Calculate the angle of incidence.
A student claims that the angle of incidence can be negative. Is this statement correct? Justify your answer.
If a light ray is incident on a plane mirror at an angle θ to the normal, express the angle between the incident ray and the reflected ray in terms of θ.
If the incident ray, the reflected ray, and the normal at the point of incidence do not lie in the same plane, which law of reflection is violated?
