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Final Exam SCPY 180 2020

Total questions: 76

Worksheet time: 18hrs 52mins

Name
Class
Date
1.

ID ONLY

4 lines
2.

Confirmation of your email address. It has to be the same as the one you use for Quizizz registration, and will be used for score report notification. Misspelling will cause delay for score/grade announcement and any excuse cannot be accepted.

4 lines
3.

As shown by a video clip in the class, Destruction of "Tacoma bridge" largely demonstrates what concept?

a)

Resonance

b)

Total Reflection

c)

Nuclear radiation

d)

Critical angle

4.

The number of cycles per second is known as

a)

Amplitude

b)

Compression

c)

Frequency

d)

Wavelength

5.

Waves with oscillation/displacement in the same direction as travel/energy transfer are

a)

Longitudinal

b)

Electromagnetic

c)

Transverse

d)

Mechanical

6.

Waves with displacement perpendicular to the direction of propagation/energy transfer are

a)

Longitudinal

b)

Oscilliation

c)

Transverse

d)

Vacuum

7.
This image is...
a)
Inverted and smaller
b)
Inverted and larger
c)
not inverted and smaller
d)
not inverted and larger
8.

Concave lenses produce...

a)

only virtual images

b)

virtual or real images

c)

only real images

d)

inverted images

9.

What type of lens do humans have in their eyes?

a)

concave lens

b)

convex lens

10.

A student is 2.50m away from a convex lens while her image appears 1.80m away from the lens on the opposite side. What is the focal length? [Approximation required]

a)

1.05m

b)

2.50m

c)

1.39m

d)

0.72m

11.

 ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be

a)

 14π0(qr2)\frac{1}{4\pi\in_0}\left(\frac{q}{r^2}\right)  

b)

 14π0(qr)\frac{1}{4\pi\in_0}\left(\frac{q}{r^{ }}\right)  

c)

 14π0(3qr2)\frac{1}{4\pi\in_0}\left(\frac{3q}{r^2}\right)  

d)

zero

12.

A laser printer has the imaging drum to be ..., in order to repel the toner powder.

a)

negatively charged

b)

positively charged

c)

neutralised

d)

cleaned

13.

Toner consists of fine particles of dry plastic powder mixed with carbon black or coloring agents. The toner particles are ..... charged inside the toner cartridge

a)

negatively

b)

positively

c)

neutrally

d)

vividly

14.

Two charges are 20 cm apart and feel a force of 600 N. if the distance between them becomes 40 cm, what is the new value of the force?

a)

600

b)

150

c)

300

d)

450

15.

Electric field is a ..(A).. quantity.

Voltage is a ..(B).. quantity.

What are A and B respectively?

a)

vector and vector

b)

vector and scalar

c)

scalar and vector

d)

scalar and scalar

16.

Amper's law states that

a)

total current enclosed by a current carrying loop is zero

b)

total magnetic field over a closed loop is equal to current carrying loop is permiability * current

c)

total electric field over a closed loop is equal to current carrying loop is permiability * current

d)

total current over a closed loop is equal to magnetic field enclosed by loop * permiability

17.

Wave-particle duality emphasizes on the fact that

a)

a wave can show wave behavior

b)

a particle can show particle behavior

c)

a wave can some times show the property of particle

d)

a wave can some times show the property of wave and matter both

18.

From Compton experiment, it proves that photons have energy and ..... just as material particles do.

a)

Momentum

b)

Frequency

c)

Wavelength

d)

Electric field

19.
When the nuclei of certain isotopes (atoms) are unstable and spontaneously decompose, this is called ________________.
a)
radioactive
b)
a melt down
c)
ionization
d)
half-life
20.

The most common three types of radiation associated with nuclear disintegration are ____________, _____________, and _____________.

a)

alpha, beta, and gamma

b)

alpha, beta, and half-life

c)

beta, gamma, and half-life

d)

beta, gamma, and delta

21.
When moving neutrons hit the nuclei of certain other atoms thereby causing them to disintegrate, and this happens repeatedly, it is said to be a _______________________.
a)
nuclear chain reaction
b)
alpha radiation
c)
nuclear half-life
d)
control rod
22.

What is the type of radiographic anatomy that uses special x-ray equipment to obtain image data from different angles around the body and then uses computer processing of the information to show a cross-section of body tissues and organs. This is one of the best tools for studying the chest and abdomen

a)

X- ray

b)

PET scan

c)

CT/CAT scan

d)

MRI

23.

What is the type of radiographic anatomy that uses high frequency sound waves to produces images. This would be used to look at reproductive system parts and babies in the womb.

a)

X- ray

b)

PET scan

c)

CT/CAT scan

d)

MRI

e)

Ultrasound/sonography

24.

Which of the following scans does not use radiation?

Note: Radiation in this questions refers to radioactivity as the source of radiation.

a)

MRI

b)

CT scan

c)

PET scan

d)

X-ray

25.

De Broglie equation

a)

relates the momentum of a mass to its wavelength

b)

relates the energy of a mass to its density

c)

relates the frequency of a mass to its radioactivity

d)

relates the work function of a mass to its wavelength

26.

If waves can behave like particles, then particles can behave like a wave. This is the idea behind...

a)

Quantization of Energy

b)

Photoelectric Effect

c)

Compton Effect

d)

deBroglie Waves

27.

Believed that electrons travelled around the nucleus in definite paths.

a)

Niels Bohr

b)

Ernest Rutherford

c)

Modern Atomic Theory

28.

A football (0.4kg), a tennis ball (0.055 kg) and a ping-pong ball (0.03kg) are thrown at the same speed to an observer. Which one will have the shortest de Broglie wavelength to be detected by the observer?

a)

football

b)

tennis ball

c)

pin-pong ball

d)

all have the same de Broglie wavelength

29.

When an electron absorbs enough energy, it jumps up to a higher level. This is called

a)

absorption state

b)

excitation state

c)

emission state

d)

relaxation state

30.
An element has an atomic number of 76.  The number of protons and electrons in a neutral atom of the element are
a)
152 p+, 76 e-
b)
76 p+, 0 e-
c)
38 p+, 38 e-
d)
76 p+, 76 e-
31.
An atom has 5 protons, 7 neutrons and 5 electrons. What is the mass number of the atom?
a)
5
b)
7
c)
2
d)
12
32.

Which scientist discovered the electrons?

a)

Dalton

b)

Thomson

c)

Atristotle

d)

Bohr

33.
In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.
a)
Atoms
b)
Parts
c)
Molecules
d)
Hydrogen
34.

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

a)

Atom is mostly empty space

b)

The nucleus is positively charged

c)

The atom has a small dense nucleus

d)

All answers are correct

35.
Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?
a)
Democritus
b)
Niels Bohr
c)
Ernest Rutherford
d)
Chadwick
36.
Rutherford's gold foil experiment provided evidence that...
a)
negative and positive charges are spread evenly throughout the atom.
b)
alpha particles have a positive charge.
c)
gold is not a dense as previously thought.
d)
there is a dense positively charged nucleus at the center of an atom.
37.
J.J. Thomson provided evidence that an atom...
a)
is the smallest particle of matter
b)
contains negatively charged particles
c)
has an overall negative charge
d)
has an overall positive charge
38.

What did James Chadwick discover?

a)

neutrons

b)

electrons

c)

positron

d)

protons

39.

A loop of wire is placed near a current carrying wire as shown below. Which of the following actions will NOT produce an induced current in the loop?

a)

Moving the loop towards the wire

b)

Moving the loop away from the wire

c)

Moving the loop parallel to the wire

d)

Increasing the electric current in the wire

40.

Which of these would you mostly associate with Michael Faraday?

a)

the study of planets

b)

the theory of evolution

c)

electricity and electromagnetism

d)

the structure of the atom

41.

What is designed to change electrical energy into kinetic energy?

a)

A. capacitor

b)

B. generator

c)

C. motor

d)

D. transformer

42.

Why might a current-carrying wire be placed between a magnetic field?

a)

To increase the current from the interaction of magnetic fields

b)

To increase the voltage from the interaction of magnetic fields

c)

To produce a force from the interaction of magnetic fields

43.

What direction is the force/motion in the following diagram?

NOTE: green = magnetic field line

orange = wire carrying charges

violet = gravitational field

a)

Perpendicular to the magnets

b)

Downwards

c)

Parallel and through the magnets

44.

Name one factor that does not affect the size of a force in on a current-carrying conductor placed in a magnetic field?

a)

Gravity

b)

Magnetic flux density/size of magnetic field

c)

Size of the current

d)

Length of the conductor

45.

A 20 cm section of wire with a current of 8 A is at 90 degrees to a 0.1 T magnetic field. What direction is the force and calculate the size of it? F = BIlF\ =\ BIl  


NOTE: magnetic field  pointing to east

  wire carrying charges to the north. 

a)

up, 0.1 x 8 A x 20 cm = 16 N

b)

down, 0.1 x 8 A x 20 cm = 16 N

c)

down, 0.1 x 8 A x 0.20 m = 0.16 N

d)

up, 0.1 x 8 A x 0.20 m = 0.16 N

46.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
47.
What is the device seen here?
a)
generator
b)
electric motor
c)
electromagnet
d)
magnet
48.
Generators are devices that convert _____ energy into _____ energy.
a)
chemical; mechanical
b)
mechanical; electrical
c)
electrical; mechanical
d)
potential; kinetic
49.

What type of device is being shown?

a)

Electromagnet

b)

Electric motor

c)

Electric generator

d)

Electromagnetic Induction

50.

In this figure, determine the magnetic field generated by the wire by identifying the magnetic north pole. Note that the wire is made of aluminum. Which part represents the magnetic north pole?

a)

the head of the nail

b)

the bottom of the nail

c)

No magnetic field generated

d)

the magnetic field generated inside the battery instead.

51.

In vacuum,

a)

both sound waves and light waves can propagate.

b)

sound waves can propagate but light waves cannot.

c)

light waves can propagate but sound waves cannot

d)

light waves and sound waves can propagate.

52.

Sounds that are above the normal hearing range of humans are called:

a)

Perisonic

b)

Supersonic

c)

Hyposonic

d)

Ultrasonic

53.

The number of sound wave peaks that pass a given point per unit time is referred to as:

a)

Fortitude

b)

Frequency

c)

Treble

d)

Amplitude

54.

Which one is correct about Sonar and Radar?

a)

Sonar uses reflection from sound waves but Radar uses reflection from radio waves.

b)

Sonar and Radar use reflection from sound waves.

c)

Sonar and Radar use reflection from radio waves.

d)

Both do not use reflections of waves at all.

55.

Ampere's Law states that for any closed loop path, the sum of the length elements times the magnetic field in the direction of the length element is equal to the permeability times the electric ..x..... enclosed in the loop. What is "x" ?

a)

current

b)

charge

c)

field

d)

flux

56.

The Biot-Savart Law relates <x> to the <y> which are their sources. In a similar manner, Coulomb's law relates electric fields to the point charges. What are x and y respectively.

a)

magnetic fields and currents

b)

currents and magnetic fields.

c)

magnetic fluxes and currents

d)

currents and magnetic fluxes

57.

An exploration ship is sent to determine the depth of a sea. It uses to a sonar ping sent downward. It is found that the ping time is 500 ms. Given that the speed of sound in water is 1500m/s, Determine the depth of the sea at that location in meter.

a)

375

b)

750

c)

340

d)

1500

58.
Which quantity and unit are correctly paired?
a)
electric field strength and N/C
b)
electricity and Coulombs
c)
electrostatic force and electrons
d)
electric field strength and E
59.
At which point is the electric field the strongest
a)
A
b)
B
c)
C
d)
D
60.
Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.
a)
+,+
b)
+,-
c)
-,+
d)
-,-
61.

The diagram above shows a point, P, located midway between two oppositely charged parallel plates.

If an electron is introduced at point P, the electron will

a)

accelerate toward the negatively charged plate

b)

travel at constant speed toward the negatively charged plate

c)

travel at constant speed toward the positively charged plate

d)

accelerate toward the positively charged plate

62.

The diagram below shows the arrangement of three charged hollow metal spheres, A, B, and C. The arrows indicate the direction of the electric forces acting between the spheres. At least two of the spheres are positively charged. Which sphere, if any, could be negatively charged?

a)

sphere A

b)

sphere B

c)

sphere C

d)

no sphere

63.

A moving electron is deflected by two oppositely charged parallel plates, as shown in the diagram above.

The electric field between the plates is directed from

a)

C to D

b)

D to C

c)

A to B

d)

B to A

64.

Robert Andrews Millikan was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for the measurement of <x>, and for his work on the photoelectric effect. What is <x>?

a)

the elementary electric charge

b)

magnetic permeability

c)

the mass of proton

d)

the Planck constant

65.

Photoelectric effect: The minimum energy required to eject an electron from the surface is called the photoelectric <x>. what is <x>?

a)

work function

b)

kinetic energy

c)

threshold frequency

d)

stopping voltage

66.

Publicized early in the debate about whether light was composed of particles or waves, a wave-particle dual nature soon was found to be characteristic of electrons as well. The evidence for the description of light as waves was well established at the turn of the century when <x> introduced firm evidence of a particle nature as well. What is <x>?

a)

the photoelectric effect

b)

the Compton's experiment

c)

the Planck's blackbody radiation

d)

the Neil Bohr 's model

67.

When using a converging lens, the image's height and the object's height can be identical if ...

a)

the object distance is equal to the focal length.

b)

the object distance is equal to two times the focal length.

c)

the object distance is less than the focal length.

d)

the object is placed at infinity.

68.

Image formation by a converging lens: when plotting the graph of the inverse of object distance (1/v) versus the inverse of the image distance (1/u). The graph appears to be ..

a)

a line passing through the origin.

b)

a parabola curve

c)

an exponential curve

d)

a line with a slope of 45 degrees downward

69.

Without modfication, Geiger counters has low efficiency to detect ...

a)

Alpha radiation

b)

negative beta radiation

c)

positive beta radiation

d)

x-ray radiation

70.

What is used to change Mercury into Gold (Au)

a)

electron

b)

proton

c)

neutrol

d)

alpha

71.

Uranium-238 undergoes multiple nuclear decay to lead (PB-206). How many alpha particles are generated from the whole process?

a)

7

b)

8

c)

9

d)

10

72.
What type of circuit is pictured?
a)
series
b)
parallel
73.
Which type of current comes from a battery?
a)
alternating current (AC)
b)
direct current (DC)
74.

Which of the following is the SI unit for electric current?

a)

Ohm

b)

Watt

c)

Ampere

d)

Volt

75.
If bulb 1 burns out, what will occur?
a)
bulbs 2 and 3 will go out
b)
bulbs 2 and 3 receive more volts
c)
bulbs 2 and 3 will stay lit
d)
nothing will happen
76.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V