1.

How do you arrange radio waves (r), visible light (v), infrared light
(i),x-rays (x), and ultraviolet light (u) in the correct order of
decreasing wavelength?
A. i, r, v, u, x B. i, v, r, u, x C. r, i, v, u, x D.v,i,r,x,u

2. In what order should you arrange blue (b), green (g), red (r), and
yellow (y) components in white light according to increasing
wavelength?
A. r, y, g, b B. r, g, y, b C. g, y, b, r D. b, g, y, r

3. If the wave's wavelength doubles while its speed stays the same,
what will happen to its frequency?
A. doubled
B. half of the original
C. tripled
D. stays the same

4. One form of electromagnetic radiation that has several uses is

radio waves. Why, in your opinion, are radio waves employed in
communications?
A. Radio waves have long wavelengths and high frequency.
B. Radio waves have the shortest wavelength and lowest
frequency.
C. Radio waves have the longest wavelength and lowest
frequency.
D. Radio waves have short wavelengths and high frequency.

5. Television, FM, AM radio broadcasts, and many more

communications applications employ different radio wave
frequencies. What are radio waves' benefits and drawbacks for
telecommunications?
A. Radio waves do not require wires to transmit information and
the disadvantage is they cannot transmit a lot of data
simultaneously.
B. Radio waves require wires to transmit information and the
disadvantage is they cannot transmit data simultaneously.
C. Radio waves can transmit information without interference
and the disadvantage is they cannot transmit data
simultaneously.
 D. Radio waves cannot transmit information without interference
and the disadvantage is they cannot transmit data
simultaneously.
6. Determine which of the following statements best describes why
we see red sunsets by looking at the diagram below.

A. Blue and green lights have longer wavelengths than violet light but
are also scattered on the atmosphere and do not reach the eye of the
observer.
B. Red light has the longest wavelength that could penetrate the
atmosphere during sunset, hence could reach the eye of the observer.
C. Yellow and orange light have longer wavelengths that blue and
green lights that may reach the eye of the observer
D. Violet light have the shortest wavelength more than other colors and
is scattered in the atmosphere and do not reach the eye of the
observer

7. Examine the table below to figure out why the sun's UVC rays do not
reach the earth.

Name Wavelength (nanometer nm)

Ultraviolet A (UV-A) 315-400
Ultraviolet B (UV-B) 280-315
Ultraviolet C (UV-C) 100-280
A. UV-C has short wavelength
B. UV-C is completely blocked by the atmosphere
C. UV–C rays is from artificial source like lamp and laser
D. UV-C is completely filtered by the atmosphere’s ozone layer due to
having the shortest wavelength.
 8. One of the most practical and extensively utilized gamma-ray
emitters
is technetium-99m. radioactive element. What characteristics of
gamma rays made them valuable for research in medicine?
A. Due to their low penetrating power, the impact of gamma
radiation can occur
throughout a body they are however highly ionizing than alpha
particles.
B. Gamma rays have the lowest frequency and highest energy
among the components of the electromagnetic spectrum.
C. Gamma rays have high energy but low penetrating power
among the components of the electromagnetic spectrum.
D. The high energy and high penetrating power of gamma rays
enable them to pass through many kinds of materials, including
human tissue.

9. A motorcycle rider who was traveling quickly unexpectedly

became engaged in an accident. His parents desire to determine
whether a bone fracture exists. He had an x-ray taken. Which of
the following figures accurately depicts an x-ray scan?

A C.

B. D.

10. How would you use the knowledge you have gained regarding
the advantages and dangers of electromagnetic waves?
I. Sleep with your cell phone next to you.
II. Let a pregnant woman have her x-ray check.
III. Apply sunblock whenever going outside the house.
IV. Schedule a monthly medical check-up with MRI, and CT scan.

A. I and II B. I, II, IV C. III only D. III and IV

 11. What statement/s describes the effects of EM radiation to living
things and the environment?
I. It can treat cancer.
II. It can be used to cook food.
III. It can lead to global warming.
IV. It can cause skin burns or other skin related problems.

A. II only B. III only C. I, II, III, IV D. I and IV only

12. Tumors and malignancies are treated using radiotherapy. This

type of treatment is linked to gamma radiation. What would the
treatment's likely effects be, given that this is an ionizing
radiation?
I. It can lead to damage of good and bad cells in the body
II. It can make your body radioactive
III. It affects the function of the heart
IV. It will alter the cell in the body and lead to mutation

A. I , II and III C. I , III and IV

B. I , II and IV D. II , III and IV

13. When correcting nearsightedness, what kind of lens is used?

A. Concave B. Convex C. Parabolic D. Plane

13. When an object is less than one focal length away from a thin
convex lens, which best represents the image that results?
A. Inverted, enlarged and real
B. Inverted, diminished and real
C. Upright, enlarged, and virtual
D. Upright, diminished, and virtual
14. In a plane mirror, the image is _______.
A. flipped left to right C. refracted
B. magnified D. smaller than the original

15. A light beam's reflection on a plane is seen in the diagram below.

What does "B" stand for?
A. flat line
B. incident ray
C. normal line
D. reflected ray

16. Standing 150 centimeters tall, Juana? examines herself in front

of a plane mirror. Which of the following best sums up Juana's
image?
A. Juana’s image is real with height the same as her actual height.
B. Juana’s image is virtual with height the same as her actual height.
C. Juana’s image is virtual with height slightly taller than her actual
height.
D. Juana’s image is real with a height slightly smaller than her actual
height.

17. A child gazed at the reflection on a silver balloon that was

opaque and glossy. What caused the appearance to appear
warped?

A. The balloon is not flat so it curves and reflected images

B. The light is refracted as it passes through the balloon
C. The light is reflected off the child face making it shiny
D. The light bends as it travels from one medium to another.
18. Diffuse reflection is a (an) ________ reflection of light rays on a
_________ surface.
A. even, smooth C. Semi smooth, rough
B. even or uneven, semi rough D. Uneven, rough

19.What will happen to a light ray as it travels through the air on its
way to the water?
A. The light ray travels in a straight path.
B. The light ray is refracted towards the normal line.
C. The light ray is refracted away from the normal line.
D. The light ray cannot travel through the air and water.

20.In the diagram, what would be the (LOST) location, orientation,

size, and type of image formed in the ray diagram?

A. at C - inverted - same - real

B. at F - upright - reduced - virtual
C. between C and F - inverted - reduced - real
D. no image formed
 21.How far away is the image of Pedro in a plane mirror if he were
standing three feet in front of it?
A. 3 ft B. 4 ft C. 6 ft D. 8 ft

22.Examine the following diagram. A concave mirror is positioned in

front of an item (at C, center of curvature). The diagram shows
Ray 1. What would the image most likely be if you were to
construct it with another light ray?

C.
A.

D.

B.

23.What image is created when the pinhole camera's back wall is

moved farther?
A. larger and fainter C. larger and brighter
B. smaller and fainter D. smaller and brighter
24.Which is the proper order for a basic motor to operate?

I. Electrical energy is converted to mechanical energy.

II. The attraction and repulsion cause the wire to jump.
III. Magnets placed near one another either attract or repel.
IV. Temporary magnetic field interacts with the permanent
magnet.
V. Electric current starts to creep along wire; it creates a
magnetic field all around it.
A. I, II, III, IV, V
B. II, IV, I, III, V
C. IV, V, III, II, I
D. V, IV, III, II, I