SAN QUINTIN HIGH SCHOOL EDUCATIONAL FOUNDATION INC.
San Quintin, Pangasinan
FINAL EXAMINATION IN PHYSICAL SCIENCE
For ABM-11 & ICT-12
A.Y. 2019-2020
Name: _________________________________________
Grade and Section: _______________________________
Score: ____________
Date: _____________
I. MULTIPLE CHOICE (40 points). Choose the letter of the best answer. Write the letter before each number.
____1. The phenomenon by which the incident light falling
b. cool air.
on a surface is sent back into the same medium is
c. a vacuum.
known as ___.
d. Water
a. Polarization
c. Refraction
____13.Which of these electromagnetic waves has the
b. Reflection
d. Absorption
shortest wavelength?
____2. When light is incident on a polished surface
a. radio waves
_________reflection takes place.
b. infrared waves
a. Regular
c. Diffused
c. X rays
b. Irregular
d. Normal
d. light waves
____3. According to the laws of reflection,
____14.Light waves traveling through the vacuum of space
have a speed that's equal to
a. i =
r
c.
r>
i
a. 3.0 X 103 m/s.
b. i >
r
d.
r≠
i
b. 5 X 106 m/s.
____4. Dentists use a _____________ to focus light on the
c. 3.0 X 108 m/s.
tooth of a patient.
d. 9.0 X 109 m/s.
a. concave mirror
c. plane mirror
____15.The effect in which white light separates into
b. convex mirror
d. cylindrical mirror
different colors is called
____5. What is the angle between the incident and
a. magnification
reflected rays when a ray of light is incident normally
b. refraction
on a plane mirror?
c. reflection
a. 90°
c. 180°
d. dispersion
b. 45°
d. 0°
____16.
The range of electromagnetic signals
____6. A ray of light is incident on a plane mirror and the
encompassing
all frequencies is referred to as?
o
angle of incidence is 25 . What is the angle of
a.
EM
waves
reflection?
b. EM frequency
a. 0°
c. 90°
c. EM spectrum
b. 50°
d. 25°
d. EM radiation
____7. A ray of light is incident on a plane mirror and the
____17.
A wave with low frequency would have relatively
o
angle of reflection is 50 . Calculate the angle between
______________.
the incident ray and the reflected ray.
a. high energy and a long wavelength
a. 50°
c. 90°
b. low energy and a short wavelength
b. 25°
d. 100°
c. low energy and a long wavelength
____8. When light passes through air into glass, its angle
d. high energy and a short wavelength
of refraction is
____18.
Where on the electromagnetic spectrum is visible
a. less than its angle of incidence.
light
found?
b. the same as its angle of incidence.
a.
between X-rays and gamma rays
c. more than its angle of incidence.
b.
between radio waves and microwaves
d. can be more or less than its angle of incidence.
c. between x-rays and UV rays
____9. Light refracts when traveling from air into glass
d. between infrared rays and UV rays
because light
____19.
Which of the following statements is true?
a. travels at the same speed in air and in glass.
a.
Gamma rays have shorter wavelengths than
b. frequency is greater in air than in glass.
microwaves.
c. frequency is greater in glass than in air.
b.
Gamma rays have longer wavelengths than UV
d. travels slower in glass than in air.
rays.
____10.Color depends on what characteristic of light?
c.
Radio waves have shorter wavelengths than Xa. its frequency
rays.
b. its wavelength
d.
X-rays have longer wavelengths that
c. both of these
microwaves
d. neither of these
____20.
What
type of rays would you expect to be used
____11.All of the waves listed below are a part of the
frequently at a hospital to make medical
electromagnetic spectrum except
diagnoses?
a. sound waves.
a.
Gamma rays
b. X rays.
b.
UV rays
c. gamma rays.
c.
x-rays
d. light waves.
d.
Microwaves
____12.Light travels fastest in
a. warm air.
II.
MATCHING TYPE (30 Points)-Match column A with B. Write the letter of the correct answer on the blank before
each number.
Column A
Column B
____1. Optics
a. incident ray bounces off in a single direction.
____2. Geometric Optics
b. bends light so that the light rays come together to a point
____3. Lens
c. a single ray of light scatters into many directions
____4. Converging Lens
d. optical device that is used to bend light in a specific way
____5. Diverging Lens
e. bends light so it spreads light apart instead of coming together
____6. Mirror
f. appear in mirrors
____7. Prism
g. branch of optics that describe light propagation in terms of ray
____8. Images
h. ability of a material to bend rays of light
____9. Incident Ray
i. bending of light rays
____10. Reflected Ray
j. reflect light and allow us to see ourselves
____11. Specular Reflection
k. follows the light bouncing off the mirror
____12. Diffused Reflection
l. variation in refractive index with color
____13. Law of Reflection
m. follows the light falling onto the mirror
____14. Reflection
n. science that deals the behavior of light
____15. Refraction
o. the angle of incidence equals the angle of reflection
p. bouncing of light
q. device that can cause light to change directions
II. PROBLEM SOLVING (50 points): Read each problem carefully and answer on a separate sheet of paper. Be sure to show
your complete solution.
1. Light traveling through a glass (n=1.5) reaches the end of the and exits into air. (a) If the angle of incidence on the
end of the glass is 30o, what is the angle of refraction outside the glass?
2. What is the speed of light in a glass whose index of refraction is 1.60?
3. What is the index of refraction in a medium where the speed of light is 1.5×108 m/s?
4. A ray of light is incident through glass, with refractive index 1.52, on an interface separating glass and water with
refractive index 1.32. What is the angle of refraction if the angle of incidence of the ray in glass is 25°?
5. What should be the angle of incidence of a light ray incident through air on the boundary separating air from water so
that the angle of refraction is 30 °?
6. A light ray strikes a reflective plane surface at an angle of 56° with the surface.
a) Find the angle of incidence.
b) Find the angle of reflection.
c) Find the angle made by the reflected ray and the surface.
d) Find the angle made by the incident and reflected rays.
7. What percentage of the speed of light in vacuum is the speed of light in diamond?
8. The speed of light in a certain transparent material is 52.3% of the speed of light in a vacuum. What is the index of
refraction of the material?
9. A fisherman notices that one wave passes the bow of his anchored boat every 3 seconds. He measured the wavelength
to be 8.5 meters. How fast are the waves traveling?
10. On a smooth surface, a soft 100-grams ball A at the velocity of 10 meters per second collides with another 700-grams
ball B initially at rest. After collision, the two balls stick together and keep moving in the same direction as ball A.
What is the velocity of the two balls after collision?
“There is no one better than you to take this challenge on”
GOOD LUCK AND GOD BLESS!!!
Cher Dhan 😊
Prepared by:
Mr. ROLDAN M. ORMILLA
Science Teacher/Grade 10-D Adviser
Checked by:
Ms. ERLINDA A. CARIÑO
Science Coordinator/Cashier