Anticipate the Answer
When answering multiple choice questions, a useful strategy is to cover up the given answers and supply your own answer. Then compare your answer with those listed and select the one that most closely matches.
Practice anticipating the answer in this question.
When the incident angle of a light ray exceeds the critical angle, the ray undergoes
total refraction.
systemic diffraction.
astigmatism.
total internal reflection.
mirror imaging.
(Answer: D)
Choose the letter that best answers the question or completes the statement.
Which statement correctly describes a property of mirrors?
Plane mirrors always form real images.
Concave mirrors can form real and virtual images.
The law of reflection only applies to convex mirrors.
Real images formed by concave mirrors are right side up.
All mirrors refract light rays to form images.
If a light ray slows down as it enters a medium at an angle, the ray is
totally reflected.
refracted.
diffracted.
evenly dispersed in the new medium.
travelling faster than .
When a ray strikes a plane mirror at an angle,
the light ray slows down and bends.
an inverted virtual image is formed.
the light ray is refracted.
the angle of incidence of the ray equals the angle of reflection of the ray.
the image formed is real.
Which of the following statements about convex lenses is FALSE?
They cause light rays to refract.
They can form real and virtual images.
They cause incoming parallel rays to converge.
They are thickest at the outside edges.
They are used in lighthouses.
Which description correctly matches the type of optical instrument?
Microscope—forms enlarged images of distant objects.
Camera—focuses incoming light using a series of mirrors.
Refracting telescope—is made up of two convex lenses.
Reflecting telescope—is made up of one convex lens and one concave lens.
Pinhole camera—focuses incoming light using a series of lenses.
Question 6 refers to the ray diagram shown below.
Which of the following statements is TRUE?
The mirror shown is concave.
The converging light rays form a real image.
The diverging rays form a real image.
The diverging rays form a virtual image.
The reflected light rays are parallel.