Welcome to your Grade 10 Physics chapter 6
After carefully reading the following 30 questions, choose the correct answer.
1.
Electromagnetic waves are produced by:
2.
Which of the following is NOT an electromagnetic wave?
3.
What is the speed of electromagnetic waves in a vacuum?
4.
The law of reflection states that the angle of incidence is:
5.
Which type of mirror always forms a virtual, upright, and diminished image?
6.
Refraction occurs because light:
7.
The refractive index (n) of a medium is defined as the ratio of:
8.
Which phenomenon is responsible for the formation of a rainbow?
9.
A lens that is thicker at the center than at the edges is a:
10.
Total internal reflection occurs when the angle of incidence is:
11.
The primary colors of light are:
12.
Snells’s Law relates the indices of refraction and angles as:
13.
An object placed at the focal point of a converging lens will produce:
14.
Which part of the electromagnetic spectrum has the highest frequency?
15.
In a plane mirror, the image is:
16.
For a concave mirror, if the object is between the focal point (F) and the mirror, the image is:
17.
The power of a lens is measured in:
18.
Which electromagnetic wave is used in remote controls?
19.
When light travels from a denser medium to a rarer medium, it bends:
20.
The lens formula is given by:
21.
An object that absorbs all colors of light appears:
22.
Which type of lens is used to correct short-sightedness (myopia)?
23.
The magnification (m) of a lens is defined as:
24.
Which phenomenon explains why a stick looks bent in water?
25.
If the magnification of a lens is negative, the image is:
26.
Which mirror is used in a car's side-view to provide a wide field of view?
27.
In geometric optics, light is modeled as:
28.
The center of the reflecting surface of a spherical mirror is the:
29.
Blue light mixed with red light produces which secondary color?
30.
A diverging lens always forms an image that is:
