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MCQ final exam

Total questions: 60

Worksheet time: 36mins

Name
Class
Date
1.

______________ collisions conserve momentum.

a)

Elastic

b)

Inelastic

c)

Perfectly Inelastic

d)

All

2.

______________ collisions conserve momentum and energy.

a)

Elastic

b)

Inelastic

c)

Perfectly Inelastic

d)

All

3.

______________ collisions have objects that stick together.

a)

Elastic

b)

Inelastic

c)

Perfectly Inelastic

d)

All

4.

________ is the measure of a force that causes a rotation.

a)

Torque

b)

Inertia

c)

Angular momentum

d)

Lever arm

5.

A positive torque is in the ________ direction.

a)

clockwise

b)

counter-clockwise

c)

inward

d)

outward

6.

The symbol for electric charge is represented by the letter (a)   .

7.

The unit for electric charge is (a)   .

8.

Most objects are (a)   charged because they have equal numbers of protons and electrons.

9.

A positive and a negative charge will attempt to _______.

a)

attract

b)

repel

c)

not interact

d)

explode

10.

Two like charges will attempt to _______.

a)

attract

b)

repel

c)

not interact

d)

explode

11.

Electric field lines will always move __________ positive charges.

a)

clockwise from

b)

counter-clockwise from

c)

inward to

d)

outward from

12.

__________ is the "electric pressure" that causes electrical charges to move.

a)

Voltage

b)

Current

c)

Resistance

d)

Power

13.

__________ is the opposition to the flow of electrical charges.

a)

Voltage

b)

Current

c)

Resistance

d)

Power

14.

In a series circuit, there is ______ path(s) for electricity to take.

a)

0

b)

1

c)

2

d)

3

15.

A plane mirror produces a __________ image.

a)

virtual, upright

b)

virtual, inverted

c)

real, upright

d)

real, inverted

16.

The object distance is __________ the image distance for a plane mirror.

a)

greater than

b)

less than

c)

equal to

d)

triple

17.

For spherical mirrors, the focal length is _________ the radius of curvature.

a)

double

b)

half

c)

triple

d)

one third

18.

If the image distance is greater than the object distance, the image is ________.

a)

upright

b)

inverted

c)

enlarged

d)

reduced

19.

The __________ is the point at which the optical axis and mirror intersect.

a)

focal point

b)

center of curvature

c)

vertex

d)

focus

20.

__________ mirrors have positive focal lengths.

a)

Plane

b)

Convex

c)

Concave

d)

Spherical

21.

A (n) __________ image is one where the reflected rays of light actually intersect at a point, and it could be projected on a screen.

a)

real

b)

virtual

c)

enlarged

d)

reduced

22.

________ is the symbol used to represent the height of the image.

a)

ho

b)

hi

c)

do

d)

di

23.

If the image produced is pointing the same direction as the object, the image is considered __________.

a)

real

b)

virtual

c)

upright

d)

inverted

24.

A magnification value that is greater than 1 means that the image is __________.

a)

same

b)

smaller

c)

enlarged

25.

A magnification value that is positive means that the image is __________.

a)

real

b)

virtual

c)

enlarged

26.

Which of the following is conserved in all cases?

a)

kinetic energy

b)

mechanical energy

c)

non-mechanical energy

d)

total energy

27.

________________ energy is stored energy.

a)

Kinetic

b)

Potential

c)

Non-mechanical

d)

Light

28.

A stretched rubber band demonstrates ______________ energy.

a)

kinetic

b)

gravitational potential

c)

elastic potential

d)

heat

29.

Friction changes kinetic energy into __________________.

a)

gravitational & chemical

b)

heat & chemical

c)

sound & chemical

d)

heat & sound

30.

Which is NOT a unit for power?

a)

J/s

b)

Nm/s

c)

W

d)

Jm

31.

What is the SI unit for energy?

a)

N

b)

J

c)

W

d)

P

32.

Power is defined as __________________.

a)

work per unit of length

b)

force times unit of length

c)

work per unit of time

d)

force times unit of time

33.

An object with kinetic energy must be __________.

a)

moving

b)

falling

c)

elevated

d)

at rest

34.

What are the differences between elastic and inelastic collisions?

a)

In elastic collisions, kinetic energy is conserved; in inelastic collisions, it is not.

b)

In elastic collisions, objects stick together; in inelastic collisions, they bounce apart.

c)

In elastic collisions, momentum is conserved; in inelastic collisions, it is not.

d)

In elastic collisions, objects will always permanently change shape; in inelastic collisions, objects do not change shape.

35.

Which type of collision is most likely to occur when two billiard balls hit each other?

a)

Perfectly inelastic collision

b)

Elastic collision

c)

Inelastic collision

d)

None of the above

36.

What is the equation for momentum?

a)

p=mv

b)

L= IωI\omega

c)

d= mv\frac{m}{v}

d)

a= v2r\frac{v^2}{r}

37.

The direction of an object's momentum is always the same as its direction of ___.

a)

torque

b)

acceleration

c)

motion

d)

net force

38.

Friction is a force that:

a)

Increases motion

b)

Decreases motion

c)

Has no effect on motion

d)

Changes the direction of motion

39.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
40.

An object has 20 protons and 25 electrons.

a)

positive

b)

negative

c)

neutral

41.

Two particles with opposite charges​ (a)   each other.

Two particles with the same charge ​ (b)   each other.

Choose from the below words
attract
repel
amplify
destroy
42.

What is the unit of electric charge?

a)

Ampere

b)

Coulomb

c)

Ohm

d)

Volt

43.
What variable do "Newtons" represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
44.

The force between electric charges depends on...

a)

the mass of the charges

b)

the distance between charges

c)

the amount of charge

d)

the velocity of the charges

45.

Which symbol represent the physics quantity of torque?

a)
Ω
b)
Δ
c)
d)

τ\tau

46.

Torque is defined as _____.

a)

mass times velocity

b)

force times lever arm

c)

momentum times radius

d)

force times time

e)

mass times acceleration

47.
The easiest way to open a heavy door  is by applying the force
a)
Near the hinges
b)
In the middle of the door
c)
At the edge of the door far from the hinges
d)
At the top of the door
48.
When an object is experiencing a net torque
a)
it is in dynamic equilibrium.
b)
it is in static equilibrium.
c)
it is rotating.
d)
it is translating.
49.
What is the Unit for Torque
a)
Nm
b)
N
c)
W
d)
J
50.

The force that pulls objects toward the center of the Earth is called:

a)

Magnetic force

b)

Gravitational force

c)

Electric force

d)

Nuclear force

51.

Which of the following is a characteristic of force?

a)

It can only push objects

b)

It can only pull objects

c)

It can either push or pull objects

d)

It has no effect on objects

52.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
53.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
54.
What kind of circuit is this?
a)
series
b)
parallel
55.

What type of circuit is the image showing?

a)

Parallel

b)

Series

c)

No circuit

56.
What is resistance measured in?
a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

57.
The mathematical relationship among Voltage, Current, and Resistance
a)

Faraday's Law

b)

Tesla's Law

c)

Edison's Law

d)

Ohm's Law

58.

Which is the value of the constant in Coulomb's equation?

a)

k = 9·10-9

b)

k = 9.8

c)

k = 6.67·10-11

d)

k = 9 ·109

59.

If one of the charges doubles, what happens to the force?

a)

it doubles

b)

it gets cut in half

c)

it quadruples

d)

it is cut by 1/4

60.
If the distance doubles, what happens to the force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples