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