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