4th Summative Test

Question 1

A. CONCAVE

Farther than the Center of Curvature

Answer 1

Between C and F
inverted
reduced
real

Question 2

A. CONCAVE
At the Center of Curvature

Answer 2

At C
inverted
same
real

Question 3

A. Concave
Between the Center of Curvature and the Focal point

Answer 3

Beyond C
inverted
enlarged
real

Question 4

A. Concave
At the Focal point

Answer 4

No image formed

Question 5

A. Concave
Between the Focal point and the Center of the lens (Vertex)

Answer 5

Behind the Mirror
Upright
Enlarged
Virtual

Question 6

B. CONVEX

All locations

Answer 6

Between F and V
Upright
reduced
virtual

Question 7

A ray of light parallel to the principal axis is reflected passing through the principal focus, F.

Answer 7

P-F ray

Question 8

A ray of light passing through the focus, F is reflected parallel to the principal axis.

Answer 8

F-P Ray

Question 9

A ray of light passing through (towards) the center of curvature, C reflects back along its own path.

Answer 9

C-C ray

Question 10

A ray of light directed to the vertex reflects at equal angle from the principal axis

Answer 10

V ray

Question 11

di=

Answer 11

dof/do-f

Question 12

do=

Answer 12

dif/di-f

Question 13

f=

Answer 13

dido/di+do

Question 14

hi=

Answer 14

M’ho

Question 15

M’=

Answer 15

-di/do

Question 16

f + -

Answer 16

concave, convex

Question 17

di + -

Answer 17

real and besides the mirror
virtual and behind the mirror

Question 18

hi + -

Answer 18

upright
inverted

Question 19

M’
>1
<1
=1

Answer 19

enlarged
reduced
same

Question 20

provides an image of an object that is bigger than that seen by the naked eye.

Answer 20

Magnifying Glass

Question 21

uses two converging lenses with short focal lengths. The objective lens forms a real and enlarged inverted image. The eyepiece, on the other hand, forms a further enlarged, erect, but virtual final image.

Answer 21

compund microscope

Question 22

allows us to see distant objects. It contains two converging lenses, namely, the objective and the eyepiece. The objective lens forms a real image of a very distant object within the focus of the eyepiece lens.

Answer 22

telescope

Question 23

box-like device used for taking pictures. It uses a lens that produces a real image on photographic film. It is similar to the eye.

Answer 23

camera

Question 24

consist of a pair of telescopes mounted together, each having an objective lens and an eyepiece.

Answer 24

binoculars

Question 25

optical device consisting of a tube attached to a set of mirrors or prisms, through which an observer can see things that are otherwise out of sight.

Answer 25

periscope

Question 26

has a mirror, which focuses light from an intense source onto a pair of converging lenses. These lenses direct the light through the slide to a projection lens.

Answer 26

overhand projector

Question 27

Photocopy Xerox Machine Location

Answer 27

At 2F'

Question 28

Camera Location

Answer 28

Beyond 2F'

Question 29

Telescope

Answer 29

At infinity

Question 30

Projector

Answer 30

Between 2F' and F'

Question 31

Magnifying Glass

Answer 31

Between F' and V

Question 32

Converging Lenses

Answer 32

Convex Lenses

Question 33

Diverging Lens

Answer 33

Concave Lens

Question 34

transparent material made of glass or plastic that refracts light rays and focuses (or appear to focus) them at a point

Answer 34

lens

Question 35

bending of light when it travels from one medium to another of different optical densities

Answer 35

refraction

Question 36

It is thicker in the center than edges

Answer 36

Convex Lenses

Question 37

It forms real images and virtual images depending on position of the object

Answer 37

Convex Lenses

Question 38

It is also called Converging Lens because the light that passes through it tends to converge at a particular point called the focal point

Answer 38

Convex Lenses

Question 39

a. It is thicker at the edges and thinner in the center.

Answer 39

Concave Lenses

Question 40

b. It forms upright and reduced images.

Answer 40

Concave Lenses

Question 41

c. It is also called Diverging Lens because the light that passes through it tends to diverge at a particular point called the focal point.

Answer 41

Concave Lenses

Question 42

A ray of light passing through the exact center of the lens (Vertex) continue to travel in the same direction.

Answer 42

Concave and Convex

Question 42

As the object comes nearer the convex lens, the image appears farther and magnified. As it comes closer to the convex lens (between F and V), the image appears upright and becomes virtual. For all locations of objects in front of a concave lens, the image formed is always

Answer 42

between F and V Upright Reduced Virtual

Question 43

A ray of light parallel to the principal axis is refracted as if passing through the principal focus, F in front (behind) of the lens.

Answer 43

Convex

Question 43

A ray of light directed towards the focus, F behind (front) the lens is refracted parallel to the principal axis.

Answer 43

concave

Question 44

A concave lens _ because a real image is formed by the intersection of real refracted rays, and the concave lens spreads out the real rays.

Answer 44

cannot make a real image

Question 45

He was credited for discovering that electric currents create magnetic fields, which was the first connection found between electricity and magnetism.

Answer 45

Hans Christian Oersted

Question 45

Curious from Magnets

Answer 45

William Gilbert

Question 46

measurable property of matter.

Answer 46

Electric Charge

Question 47

defined as the flow of electric charge.

Answer 47

Electricity

Question 48

can move the charge.

Answer 48

Charge Carrier

Question 49

measures how tightly bound an electron is to an atom

Answer 49

Conductivity

Question 49

-movement of any electric charge carrier through an electrical conductor.

Answer 49

Electric Current

Question 50

the force exerted by magnets when they attract or repel each other.

Answer 50

Magnetism

Question 50

a force that operates between charges.

Answer 50

Electrostatic Force

Question 51

is an area around and affected by a magnet or charged particle.

Answer 51

A magnetic field

Question 51

type electromagnets are composed of core material, the purpose of which is to generate a controlled magnetic field through the winding of wire into multiple loops.

Answer 51

Solenoid

Question 51

is a region around a charged particle or object within which a force would be exerted on other charged particles or objects.

Answer 51

An Electric Field

Question 52

states that opposite poles are attract and same poles repel.

Answer 52

Principle of Magnetism

Question 53

Types of Magnet

Answer 53

Temporary Permanent

Question 54

converts mechanical or chemical energy into electrical energy.

Answer 54

Transformer Generator

Question 55

is the basic principle of operation of transformers, motors and generators

Answer 55

Electromagnetic Induction

Question 55

converts energy into electrical energy mechanical

Answer 55

Motor

Question 56

How can the turning effect be increased?

Answer 56

Increase the coil's number of turns

Question 56

_ converts electrical energy into mechanical energy

Answer 56

Motors

Question 57

What metal should be used in the core?

Answer 57

Iron