Ray Optics Flashcards
(35 cards)
What is the first law of reflection?
The angle of incidence is equal to the angle of reflection.
What does the second law of reflection state?
The incident ray, reflected ray, and the normal all lie in the same plane.
In a plane mirror, what type of image is formed?
A virtual image that is upright and laterally inverted.
True or False: The distance of the image from the mirror is equal to the distance of the object from the mirror.
True.
What is the relationship between the object distance and image distance in a plane mirror?
They are equal in magnitude.
Fill in the blank: The angle of incidence is measured from the _______.
normal.
What happens to light rays when they strike a plane mirror?
They reflect off the mirror according to the laws of reflection.
What is a characteristic of virtual images formed by plane mirrors?
They cannot be projected onto a screen.
What is the normal line in reflection?
An imaginary line that is perpendicular to the surface at the point of incidence.
Multiple choice: What type of image is formed by a concave mirror when the object is beyond the center of curvature?
A real and inverted image.
What type of mirror always produces virtual images?
Plane mirrors.
True or False: The size of the image in a plane mirror is always equal to the size of the object.
True.
What is the principal focus of a concave mirror?
The point where parallel rays of light converge after reflection.
In a convex mirror, what type of image is formed?
A virtual image that is upright and smaller than the object.
What is the focal length of a plane mirror?
Infinity, as it does not converge or diverge light.
Fill in the blank: The image distance (v) and object distance (u) for a plane mirror can be expressed as v = _______.
-u.
What happens to the path of light rays in a convex mirror?
They diverge after reflecting off the mirror.
What is the magnification of an image in a plane mirror?
The magnification is 1.
Multiple choice: Which type of mirror can produce both real and virtual images?
Concave mirror.
True or False: Images formed by concave mirrors can be projected onto a screen.
True, if the object is located within the focal length.
What is the significance of the center of curvature in mirror optics?
It is the center of the sphere from which the mirror is a part.
Fill in the blank: In optics, the term ‘lateral inversion’ refers to the _______ of images in mirrors.
reversal.
What does the term ‘virtual image’ mean?
An image that cannot be projected on a screen because it appears to be behind the mirror.
What type of mirror is used in vehicle side mirrors?
Convex mirrors.
