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 8
A mirror reflects a ray of light such that the angle of incidence is 20°. What is the angle between the incident and reflected rays?
A ray of light is incident on a mirror at 50° to the normal. What is the total angle between the incident and reflected rays?
A ray of light is incident on a plane mirror at an angle of 60° to the surface. What is the angle of incidence?
A ray of light strikes a mirror at an angle of 15° to the normal. What is the angle of reflection?
A mirror reflects a ray of light such that the angle of incidence is 20°. What is the angle between the incident and reflected rays?
A ray of light is incident on a mirror at 50° to the normal. What is the total angle between the incident and reflected rays?
A student observes that the image in a mirror appears to be the same distance behind the mirror as the object is in front. Which law explains this observation?
A student shines a light at a mirror and measures the angle of incidence as 45°. What should the angle of reflection be?
The law of reflection applies to which type of surfaces?
(1) Only smooth surfaces
(2) Only rough surfaces
(3) Both smooth and rough surfaces
(4) Only transparent surfaces
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 at 90° to 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 perpendicular to the surface at the point of incidence.
(3) It is at 45° to the surface.
(4) It is the same as the reflected ray.
Which of the following is an example of diffuse reflection?
(1) Reflection from a mirror
(2) Reflection from a calm pond
(3) Reflection from a rough wall
(4) Reflection from a polished table
In the law of reflection, the incident ray, reflected ray, and normal all lie in the same ________.
The angle between the incident ray and the normal is called the ________.
The angle between the incident ray and the reflected ray is always ________ the angle of incidence.
The angle of incidence and the angle of reflection are measured with respect to the ________.
The angle of incidence is measured from the normal. True or False?
The angle of reflection is always equal to the angle of incidence. True or False?
The law of reflection is not obeyed on rough surfaces. True or False?
The law of reflection is valid for sound waves as well as light waves. True or False?
