WorksheetsPhysics term three final
Total questions: 29
Worksheet time: 20mins
The focal length of a spherical mirror equals________
Half the radius of curvature
When a real image is formed______
light rays converge at the image
if an object is between a concave mirror and its focal point, the image will be________
virtual and larger than the object
real, inverted
virtual, inverted
Which surface would produce a specular reflection of light?
a telescope mirror
Yasmen
kaka
What determines whether a surface produces a specular reflection or a diffuse reflection?
how smooth the surface is
Color of the wall
Which statement is true about the image produced by a plane mirror?
It appears to be located on the same side of the mirror as the object.
It appears ot be larger than the object.
It appears to be inverted relative to the object.
It appears to have reversed left and right, relative to the object.
A ____ indicates that an image produced by a concave mirror is upright.
positive value for hi
negative value for hi
positive value for xi
negative value for xi
A ____ indicates that an image produced by a concave mirror is virtual
positive value for hi
negative value for hi
positive value for xi
negative value for xi
If an object is placed at the focal point of a concave mirror, where will the image be?
At infinity
The focal point
At the center of the mirror
Why do parabolic mirrors not suffer from spherical aberration?
Al parallel rays focus on kaka.
Parabolic mirrors use a secondary mirror for correction.
Parabolic mirrors have a virtual focus point.
Al parallel rays are reflected through a single point.
The reflected ray's angle equals the incident ray's angle
Reflection Law
Diffuse reflection
Refraction
Critical angle
Which surface would produce a specular reflection of light?
A mirror
A paper
A fabric swatch
A __________ is a shiny, not rough surface that reflects light
Convex lens
concave lens
plan mirror
________ is an imaginary line that runs normal to the mirror's surface, passing through
Principle axis
Parallel axis
In a converged mirror, the object between the focal and double focal length, therefore the image will be
Enlarge and real
Reduced and upright
Reduced, inverted
Reduced, enlarged
Object _______ image located at the same point
placed at the double focal length
placed outside the center of curvature
placed between the center and the focal
placed between the mirror and the focal
a concave mirror is reflected in such a way that it diverges away from the mirror surface
Every ray of light that travels through the focal point, is not reflected parallel to the principal axis
Every ray of light that travels through the focal point, is reflected parallel ot the principal axis
Which of the following objects can set a piece of paper on fire in the presence of sunlight?
Convex lens
Concave lens
Convex mirror
If an object is placed at twice the focal length of a convex lens, what is the position of the image?
behind the lens and inverted
The variables n1 and n2 in Snell's Law of Refraction depend upon
The materials involved
An example of when total internal reflection occurs is when al the light passes from a region of a higher index of refraction to a lower index of refraction.
is reflected in the region of higher index
passes through the region of the lower index but is dispersed
passes through the region of lower index without being affected
A rainbow is an example of
dispersion
white light being separated into a spectrum
refraction of light
All of the above
A magnifying glass is an example of
a convergent lens
a convex lens
a concave lens
Both convex and convergent
When an object is placed at a distant greater than twice the focal length of the convex lens, the real image produced is
inverted and smaller than the object
inverted and larger than the object
inverted and the same size as the object
upright and het same size as hte object
An example of a practical application of Snell's Law is:
Fiber optic
Electron microscopy
A convex lens refracts parallel light rays such that all meet at one point. Paralel light rays converge ot a single point after refracting through a convex lens. Therefore,
a convex lens is called a converging lens.
a convex lens is called a diverging lens.
a concave lens is called a converging lens.
a convex mirror is called a converging mirror.
Light rays do not actually pass through the focus of a concave lens. Therefore,
a concave lens has a virtual focus
a convex lens has a virtual focus
a concave mirror has a virtual focus
a concave lens has a virtual focus
What is the name of the following law: The product of the index of refraction for the first medium and the sine of the angle of incidence equals the product of the index of refraction for the second medium and the sine of the angle of refraction.
Total internal reflection occurs If the
The angle of incidence is greater than the critical angle
The angle of incidence si less than the critical angle
The angle of incidence equals to the critical angle
The angle of refraction is 90
