Physics for IGCSE & O level - Rays And Waves (Section 8)
1
An object is placed in front of a plane mirror. How will the image size compare to the object's size?
პასუხი
(C)
The same size
2
What happens when light travels from a less dense medium to a more dense medium?
პასუხი
(D)
Both A and C
3
Which lens type is commonly used in cameras?
პასუხი
(B)
Converging lens
4
What kind of waves do mobile phones use?
პასუხი
(B)
Microwaves
5
What are some of the properties of electromagnetic waves that travel from a source?
პასუხი
A
B
C
6
In the eye, the lens changes shape to focus images. What is this process called?
პასუხი
(A)
Accommodation
7
What is the speed of light in 300,000 km/s in?
პასუხი
(C)
vacuum
8
What can cause ionization?
პასუხი
A
B
9
What will happen to the light when the angle of incidence is less than the critical angle?
პასუხი
(B)
Refraction will occur
10
What are some uses for Infrared radiation?
პასუხი
B
D
11
Which of the following is a form of radiation?
პასუხი
(B)
Light
12
Which of the following is a true statement about image size in a plane mirror?
პასუხი
(C)
The image is the same size as the object.
13
What is the name of the angle between the reflected ray and the normal?
პასუხი
(C)
Angle of reflection
14
What happens to the angle of refraction when the incident light travels from a medium with a lower refractive index to a medium with a higher refractive index?
პასუხი
(C)
The angle of refraction is less than the angle of incidence.
15
Which of the following are uses of lenses?
პასუხი
A
B
C
16
What is the angle formed by the reflected ray and the normal called?
პასუხი
(B)
Angle of reflection
17
In a plane mirror, if the object is 2 meters away from the mirror, where will the image form?
პასუხი
(B)
2 meters behind the mirror
18
What does the term 'UHF' stand for?
პასუხი
(A)
Ultra High Frequency
19
What is a form of radiation?
პასუხი
A
B
20
What is the primary function of a transmitting antenna in a radio system?
პასუხი
(C)
To emit radio waves
21
What is the main function of a microphone in a telephone system?
პასუხი
(B)
To convert sound into electrical signals.
22
If the angle of incidence is 30 degrees, what is the angle of reflection?
პასუხი
(B)
30 degrees
23
What kind of images are formed in a plane mirror?
პასუხი
(B)
Virtual images
24
What are rays used to represent?
პასუხი
(A)
The direction of light
25
What happens to light when the angle of incidence is less than the critical angle?
პასუხი
(B)
Refraction
26
Which term describes a lens that makes objects appear larger?
პასუხი
(B)
Magnifying lens
27
In which scenario would you observe a rainbow?
პასუხი
(B)
When sunlight hits raindrops
28
What is the process called when light bends as it passes through one medium to another?
პასუხი
(B)
Refraction
29
Which factor does the value of critical angle depend on?
პასუხი
(B)
Material
30
What is the function of the crystalline lens in the eye?
პასუხი
(B)
To refract and focus light onto the retina.
31
What are the two laws of reflection?
პასუხი
A
B
32
What are the common uses of RFID?
პასუხი
(D)
All of the above.
33
In which type of reflection are the light rays parallel to each other after reflecting?
პასუხი
(B)
Specular reflection
34
What is the relationship between the incident ray and the reflected ray?
პასუხი
(B)
They form equal angles with the normal.
35
Which of the following are features of light?
პასუხი
A
B
C
36
What phenomenon is responsible for a pencil appearing bent when partially submerged in water?
პასუხი
(B)
Refraction
37
Which of the following is an example of a transverse wave?
პასუხი
(B)
Water waves
38
Which of the following are examples of radio waves?
პასუხი
(D)
All of the above
39
Which of these is required for sight?
პასუხი
(B)
Light
40
What are some uses of optical fibers?
პასუხი
A
B
41
Which type of radiation can cause fluorescence?
პასუხი
(B)
Ultraviolet radiation
42
What effect does a converging lens have on parallel light rays?
პასუხი
(B)
Causes them to converge at the focal point.
43
Which of the following materials will likely reflect the most light?
პასუხი
(B)
White paper
44
What is the angle of incidence equal to?
პასუხი
(B)
The angle of reflection
45
Which of the following is the unit for the speed of light?
პასუხი
(A)
m/s
46
When light encounters a rough surface, what type of reflection occurs?
პასუხი
(C)
Diffuse reflection
47
If an object is closer to a convex lens than the principal focus, what type of image is formed?
პასუხი
(D)
Virtual, upright
48
What are the two main factors linked to the properties of light?
პასუხი
B
C
49
What is the effect of a converging lens on light rays?
პასუხი
B
C
D
50
What is the name of the angle between the incident ray and the normal?
