Quarter 2 Science Spark Challenge

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