Fill in the Blank
Multiple Choice
Math
Complete the Sentence
100
______ reflection occurs when light reflects off a very smooth surface.
Specular
100
______ reflection occurs when light reflects off a rough surface and forms a blurry image or no image at all.
a. Diffuse
b. Total
c. Zero
d. Internal
a. Diffuse
100
What is the index of refraction of a light that enters an unknown substance from air at an angle of 63 degrees, and refracts at angle of 32 degrees?
a. 1.7
b. 0.65
c. 3.6
d. 2.3
e. 1.1
a. 1.7
100
In the human body, the _____ gather and focus light to form an image, but the _____ interprets the information to generate an image we can see.
Eyes, brain
200
In ______ reflection, all the light rays are reflected in the same direction.
Regular
200
Which of these options gives the correct formula for magnification of a lens, if m denotes magnification, I and O denote the sizes of the image and object, respectively, and v and u denote the distances to the image and object, respectively.
a. m=I/O
b. m=v/u
c. Both A and B
d. None of the above
a. m=I/O
200
The Angle of refraction of glass is 1.5. What is the speed of light in glass if its speed in a vacuum is 3.00 x 108 m/s?
a. 3.0 x 107 m/s
b. 4.5 x 108 m/s
c. 2.0 x 108 m/s
d. 1.0 x 108 m/s
e. 3.0 x 108 m/s
c. 2.0 x 108 m/s
200
The ______ is an opaque outer covering that protects the eye.
Sclera
300
The speed of light in ______ is about 230 million m/s.
Water
300
An object is placed 15 cm in front of a mirror with a focal length of -10 cm. Where is the reflected image?
a. 0.5 cm in front of the mirror
b. 0.5 cm behind the mirror
c. 6 cm in front of the mirror
d. 6 cm behind the mirror
e. None of the above
d. 6 cm behind the mirror
300
Complete the sentence using word reflects, refracts, or diffract.
The more curved the surface of a lens is, the more it ____ the light that passes through it.
Refracts
400
A convex lens causes rays of light to converge at the ____.
Focus
400
An object is placed 30 cm in front of a mirror with a focal length of -60 cm. Where is the reflected image? Is the reflected image real or virtual?
a. 0.5 cm in front of the mirror, virtual
b. 0.5 cm behind the mirror, real
c. 20 cm in front of the mirror, real
d. 20 cm behind the mirror, virtual
e. None of the above
d. 20 cm behind the mirror, virtual
500
The _____ is a convex lens.
Cornea
500
Say you are standing 1.5 meters away from a curved mirror with focal length 2 meters. At what distance from the mirror is your image? d=___m
-6