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WorksheetsSpecial Quiz 2 (Retest)
Total questions: 29
Worksheet time: 16mins
In the visible spectrum, which color has the shortest wavelength?
Blue
Green
Red
Violet
Which property spells the difference between infra-red and ultra-violet radiation?
Color
Speed in vacuum
Wavelength
None of the choices
Which of the following forms of electromagnetic wave has longest wavelengths?
Blue light
Gamma rays
Infrared waves
Microwaves
Which of the following is true?
X-rays have longer wavelengths that microwaves.
Radio waves have shorter wavelengths than X-rays.
Gamma rays have longer wavelengths than UV rays.
Gamma rays have shorter wavelengths than microwaves
Which form of electromagnetic wave is commonly used for communication and broadcasting?
Gamma rays
Infrared
Radio waves
X-rays
Which region of the electromagnetic spectrum is used in medical imaging to visualize internal structures and diagnose diseases?
Gamma rays
Infrared
Radio waves
X-rays
When light reflects off of a completely smooth surface it is called ______.
Specular Reflection
Diffuse Reflection
Optical Reflection
Color Reflection
Consider the diagram. Which one of the angles (A, B, C, or D) is the angle of incidence?
A
B
C
D
Images produced by plane mirrors are real images.
True
False
The image formed by a plane mirror is positioned _________ the mirror.
above
below
in front
behind
In the ray diagram shown, find the angle of incidence of the second ray.
5 degrees
25 degrees
35 degrees
55 degrees
Which one of the following diagrams (of an F-shaped object and a plane mirror) shows the image drawn correctly ?
A
B
C
D
E
What kind of mirror is used by department stores to give a wider area and smaller image of the shoppers/buyers?
A. B. C. D. None of the above
Concave mirror
Convex mirror
Plane mirror
None of the choices
Based on the electromagnetic spectrum, which of the following shows the correct order of increasing wavelength?
gamma rays, x-rays, infrared rays, visible light, UV rays, microwaves, radio waves
radio waves, visible light, infrared rays, microwaves, gamma rays, x-rays, UV rays
radio waves, microwaves, infrared rays, visible light, UV rays, x-rays, gamma rays
gamma rays, x-rays, UV rays, visible light, infrared rays, microwaves, radio waves
How does radiation affect living cells?
Radiation can damage DNA inside living cells.
Radiation can strike the DNA molecule directly, ionizing and damaging it.
Radiation can ionize water molecules, producing free radicals that react with and damage DNA molecules.
All of the above
When light undergoes reflection off a smooth surface, such as a mirror, to which angle the angle of incidence is equal to?
The angle of refraction
The angle of reflection
The angle of diffraction
The angle of transmission
Which of the following statements is correct?
The reflected light passes through a real image but not through a virtual image.
A real image can be seen, a virtual image cannot.
Only real images can be located by the no-parallax method.
A virtual image can be formed on a screen, a real image cannot.
A girl stands 2.5 metres in front of a plane mirror.
How far and in what direction must she move so that she will be 3 metres from her image?
Half a metre towards the mirror
One metre away from the mirror
One metre towards the mirror
Half a metre away from the mirror
If you want to see your full image, then minimum size of the mirror -
should be your height
should be half your height
should be twice your height
depends upon distance from the mirror
Which of the following letters do not suffer lateral inversion -
HGA
VET
HOX
YUL
The number of images observable between two parallel plane mirrors is -
2
4
11
infinite
Two plane mirrors are inclined to one another at an angle of 40°. A point object is placed symmetrically in between them. The number of images formed due to reflection at both mirrors is -
6
8
9
infinite
What is the primary difference between reflection and refraction?
Reflection involves bending of light, while refraction involves bouncing off a surface.
Reflection involves the splitting of light into a spectrum of colors, while refraction involves the absorption of
light by an object.
Reflection is the bouncing of light off a surface, while refraction is the bending of light when passing from one
medium to another.
Reflection is the change in direction of light when passing from one medium to another, while refraction is the
bouncing of light off a surface.
How does a pencil appear when placed between the vertex and the focal point of a concave mirror?
Enlarged, inverted, real
Enlarged, upright, virtual
Reduced, upright, virtual
Reduced, inverted, real
What most likely to happen if you put a wet and a dry tissue paper in a microwave and why?
wet tissue remains wet while dry tissue remains dry because microwaves cause the water to agitate
wet tissue becomes hot while dry tissue remains dry because microwaves cause the water to vibrate
wet tissue becomes dry while dry tissue becomes hot because microwaves cause the water to diffuse
wet tissue becomes cold while dry tissue becomes cold because microwaves cause the water to excite
Where the object should be placed in front of a concave mirror to form a virtual and magnified image?
At the focus
At the center of curvature
Between the focus and the vertex
Between the center of curvature and focus
Global Positioning System (GPS) is widely used nowadays. The GPS tracking system uses the Global Navigation Satellite System network. This network incorporates a range of satellites that use microwave signals that are transmitted to GPS devices. What information does GPS devices give?
your exact location on earth
television station you are tuned in
who is sending message to your phone
data of video game you can play on your phone
A kind of mirror that is smooth and flat
(a)
A type of mirror that can produce real or virtual images.
(a)
