WorksheetsQuarter 2 Science Spark Challenge
Total questions: 15
Worksheet time: 8mins
You see the reflection of the clock without numbers in your plane mirror and the image formed shows 3:30. What is the real time?
3:30
8:30
9:30
10:30
When you stand 2m in front of a full-length mirror, your image is
Real and 2m behind the mirror
Virtual and 1m behind the mirror
Virtual and 2m behind the mirror
Virtual and 4m behind the mirror
Two plane mirrors are attached to form a dual mirror system with an adjustable angle. As the angle between the mirrors decreases, the number of images _____.
decreases
increases
remains the same
undetermined
How should the mirrors be arranged such that 17 images will be formed or seen?
10 degrees
12 degrees
18 degrees
20 degrees
Which of the following does NOT use a concave mirror?
beauty kit mirror
dentist mirror
ophthalmoscope mirror
rear view mirror in cars
Why are convex mirrors used in department stores?
to enlarge the products
for a wider field of view
to accommodate the customers
for safety and security purposes
Which of the following describes the image formed by a concave mirror when the object is at a distance farther than the center of curvature (C)?
real, reduced, upright
real, reduced, inverted
virtual, reduced, upright
virtual, enlarged, upright
The word LOVE is written as EVOL because of the characteristic of a mirror known as ___
Reflection
Refraction
Reversal Effect
Virtual image
Security mirrors are used in groceries department stores & malls. How does your image look behind the mirror?
bigger image with wider field of view
smaller image with wider field of view
same size upright with wider field of view
same size inverted with narrow field of view
How does a concave lens differ from a convex lens?
A convex lens is thicker in the middle and thinner at the edges.
A concave lens is thinner in the middle and thicker at the edges.
A convex lens is a diverging lens while concave lens is a converging lens
A concave lens magnify the image while convex lens makes the image appear smaller
Concave lens _____ light rays.
adjust
block
converge
diverge
Which of the following is NOT true of a convex lens?
thicker at the center
also called converging lens
thinner at the center
forms real and virtual images depending on the position
Xandy can't see distant objects clearly, what kind of lens can you recommend solving her problem?
astigmatism lens
concave lens
convex lens
polaroid lens
What is the frequency of radio waves with a wavelength of 20 m?
4 X 10 raised to 14
5 X 10 raised to 14
6 X 10 raised to 14
7 X 10 raised to 14
What is the focal length of a convex mirror that produces an image that appears 14.0 cm behind the mirror when the object is 22.5cm from the mirror?
-35.05 cm
-36.05 cm
-37.06 cm
-37.07 cm
