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Medical Physics Quiz

Total questions: 100

Worksheet time: 53mins

Name
Class
Date
1.

Which type of tissue is most sensitive to ionizing radiation?

a)

tissue that receives the largest dose

b)

tissue with cells that divide quickly

c)

tissue that is located in the abdominal region

d)

tissue with cells that no longer divide

e)

tissue of the lower limbs

2.

ALARA stands for:

a)

As Low As Responsibly Acceptable

b)

Alarm Loss Activated Radiation Activated

c)

As Low As Reasonably Achievable

d)

As Low As Reasonably Attenuated

e)

You'll Never Walk Alone

3.

What is ionizing radiation?

a)

Radiation that does not have enough energy to remove electrons from atoms and molecules

b)

Radiation that has enough energy to remove electrons from atoms and molecules

c)

Radiation that only affects living organisms

d)

None of the above

4.

Which of the following is a hazard of non-ionizing radiation?

a)

Increased risk of cancer

b)

Genetic damage

c)

Skin damage

d)

All of the above

5.

What is the main hazard of exposure to ionizing radiation?

a)

Skin damage

b)

Genetic damage

c)

Interference with electronic equipment

d)

All of the above

6.

How can the hazards of radiation be minimized?

a)

By wearing protective clothing

b)

By using shielding materials

c)

By following proper disposal procedures

d)

All of the above

7.

Which of the following is a symptom of radiation sickness?

a)

Nausea

b)

Headache

c)

Joint pain

d)

Hearing loss

8.

Who discovered X-rays in 1895?

a)

Marie Curie

b)

Wilhelm Röntgen

c)

Albert Einstein

d)

Henri Becquere

9.

What is the name of the device that measures the level of radiation in a person's body?

a)

Dosimeter

b)

Geiger counter

c)

Radiation detector

d)

Whole body counter

10.

Which of the following types of radiation is considered to be the most dangerous to human health?

a)

Alpha particles

b)

Beta particles

c)

Gamma rays

d)

X-rays

11.

The visible light, radio waves, and microwaves are an examples of ______?

a)

Acute radiation exposure

b)

Chronic radiation exposure

c)

Non-ionizing radiation

d)

Man-Made radiation sources

12.

The device which is used for converting chemical energy to electrical energy?

a)

Battery

b)

Motor

c)

Generator

d)

None of these

13.

In 3 pin electrical plug, the longest pin is connected to which of the given options?

a)

Neutral terminal

b)

Ground terminal

c)

Live terminal

d)

None of these

14.

What color does a neutral wire have in an electric supply?

a)

Green

b)

White

c)

Black

d)

Red

15.

What is the color of a live wire?

a)

White

b)

Black

c)

Yellow

d)

Red

16.

__ is the flow of electrons around a circuit.

a)

Current

b)

Electricity

c)

Power

d)

Voltage

17.

Which of the following should you NOT do if a person is in contact with a source of electricity and suffering from electrical shock?

a)

Call 911

b)

If safe, turn off the power or source of electricity

c)

Touch him or her directly with your body

d)

Use a safe object to move the source of electricity

18.

Electricity flows through any

a)

material

b)

insulator

c)

conductor

d)

state of matter

19.

X-rays are

a)

Stream of electrons

b)

Stream of positively charged particles

c)

Electromagnetic radiations of high frequency

d)

Stream of uncharged particles

20.

X-rays have

a)

short wavelength

b)

high frequency

c)

both A and B

d)

longest wavelength

21.

Infrared signals can be used for

a)

long-range communication

b)

short-range communication

c)

both

d)

middle range communication

22.

Which of the below electromagnetic waves has the maximum frequency?

a)

Radio waves

b)

Gamma rays

c)

X-rays

d)

Visible rays

23.

Which of these EMW has the longer wavelength?

a)

X-rays

b)

UV rays

c)

Infrared rays

d)

Microwaves

24.

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

a)

conduction

b)

convection

c)

radiation

d)

conduction and convection

25.

Metals are good conductors of heat because

a)

their atoms collide frequently

b)

their atoms-are relatively far apart

c)

they contain free electrons

d)

they have high density

e)

all of the above.

26.

Which of the following has least value of conductivity

a)

glass

b)

water

c)

plastic

d)

rubber

e)

air.

27.

Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in

a)

electric heater

b)

steam condenser

c)

melting of ice

d)

refrigerator condenser coils

e)

boiler.

28.

If frequency is high, the peak of the waves would be

a)

uneven

b)

closer

c)

distant

d)

even

29.

Sound waves travel at

a)

same speed in different mediums

b)

different speed in same mediums

c)

different speed in different mediums

d)

highest speed in vacuum

30.

The hearing range of human ear is

a)

20 Hz to 20,000 Hz

b)

Less than20 Hz

c)

More than 20,000 Hz

d)

20 Hz to 25,000 Hz

31.

Sound waves have

a)

Amplitude only

b)

Frequency and wavelength only

c)

Amplitude, frequency and wavelength

d)

Amplitude and wavelength only

32.

Sound waves do not travel through

a)

Solids

b)

Liquids

c)

Gases

d)

Vacuum

33.

The relation between wave velocity 'v', frequency 'f ', and wavelength 'l' is _

a)

v = f / λ

b)

v = λ / f

c)

v = f λ

d)

v = 1/λf

34.

Wavelength of sound is d

a)

Distance traveled by the sound wave during one vibration of a particle

b)

Distance between two adjacent compressions

c)

Distance between two adjacent rarefaction

d)

All the above

35.

Sound waves of frequency less than 20 Hz is known as c

a)

Ultrasonic

b)

Audible

c)

Infrasonic

d)

Supersonic

36.

Speed exceeding the speed of sound is known as

a)

Ultrasonic

b)

Audible

c)

Infrasonic

d)

Supersonic

37.

Sound gets focused in a hall due to surfaces a

a)

Concave

b)

Convex

c)

Flat

d)

Absorbing

38.

When pressure is applied to two opposite faces of a crystal like quartz, equal b and opposite charges develop on a pair of perpendicular faces. This effect is called as

a)

Magnetostriction effect

b)

Piezoelectric effect

c)

Inverse piezoelectric effect

d)

Electromagnetic induction

39.

Which of the following electrolytes is not preferred in a salt bridge?

a)

KCl

b)

KNO3

c)

NH4NO3

d)

NaCl

40.

Type of electric current used during iontophoresis is

a)

Russian Current

b)

Surge faradic current

c)

Direct current

d)

All of the above

41.

Modality of choice for the treatment of acne vulgaris is

a)

Infrared radiation lamp

b)

Hot pack

c)

Iontophoresis

d)

UVR

42.

All of these conditions are treated by UVR except

a)

Hyperhydrosis

b)

Psoriasis

c)

Vitiligo

d)

Acne Vulgaris

43.

intermittent Galvanic current is used to

a)

Stimulate innervated muscle

b)

Stimulate denervated muscle

c)

Both A & B

d)

None of the above

44.

All of the following are the contraindications for use of IRR lamp except

a)

Low back pain

b)

Deep X-Ray therapy

c)

Tumours

d)

Defective skin sensation

45.

Which of the following has a minimum wavelength?

a)

Gamma rays

b)

Blue light

c)

Infrared rays

d)

Microwave

46.

Which among the following has the maximum penetrating power?

a)

Radio waves

b)

Microwaves

c)

Ultraviolet radiation

d)

Gamma rays

47.

Which radiations are used in the treatment of muscle ache?

a)

Infrared

b)

Ultraviolet

c)

Microwave

d)

X-rays

48.

Which of the following electromagnetic waves is used in medicine to destroy cancer cells?

a)

IR-rays

b)

Visible rays

c)

Gamma rays

d)

Ultraviolet rays

49.

Electric potential of earth is taken to be zero because the earth is good:

a)

Semiconductor

b)

Conductor

c)

Insulator

d)

Di electric

50.

A capacitor can never charge up fully, because the rate of charging

4 lines
51.

tric potential of earth is taken to be zero because the earth is good:

a)

Semiconductor

b)

Conductor

c)

Insulator

d)

Di electric

52.

A capacitor can never charge up fully, because the rate of charging ------- as the charge increases.

a)

Remains constant

b)

Increase

c)

Decrease

d)

None of above

53.

In the case of silk rubbed against glass. Electrons are transferred from?

a)

Glass to silk

b)

Silk to glass

c)

No effect

d)

Both A & B

54.

Which of the following is second best conductor among all?

a)

Aluminum

b)

Copper

c)

Gold

d)

Silver

55.

A heating coil has resistance of 20 Ω. It is designed to operate on 220 V. How much current is supplied to the heater?

a)

12 A

b)

11 A

c)

10 A

d)

1.1A

56.

Unit of power is?

a)

Watt

b)

Joule

c)

Ampere

d)

KW

57.

Which of the following is not high frequency currents?

a)

Short wave

b)

Long wave

c)

Microwave

d)

X-rays

58.

Momentum depends on:

a)

Mass of body

b)

Reluctance of mass

c)

Inertia

d)

Force of action

59.

Which one of the following is correct order of components of gait?

a)

Heel strike,stance,toe-off

b)

Heel strike,toe-off,stance

c)

Stance,toe-off,heel strike

d)

Stance,heel strike,toe-off

60.

Propulsive phase is also known as:

a)

Heel strike

b)

Mid stance

c)

Toe off

d)

Late stance

61.

In 1808, Dalton did an experiment naming particle:

a)

Neutron

b)

Proton

c)

Atom

d)

Electron

62.

Protons were discovered by:

a)

Dalton

b)

Rutherford

c)

James Chadwick

d)

Thomson

63.

When capacitor is fully charged it act as a-----?

a)

Conductor

b)

Resistor

c)

Reservoir

d)

Battery

64.

Following are the example of photo therapy except?

a)

Infrared rays

b)

Ultraviolet rays

c)

Laser

d)

Ultrasound

65.

Resistance and temperature are?

a)

Inversely proportional

b)

Directly proportional

c)

No effect

d)

Remains constant

66.

The transfer of heat from one particle of matter to another by direct particle to particle contact is called?

a)

Convection

b)

Conduction

c)

Radiation

d)

Conversion

67.

Following are the methods of charging except?

a)

Conduction

b)

Friction

c)

Convection

d)

Induction

68.

Aluminum, with an atomic number of 13, has

a)

13 valence electrons

b)

3 valence electrons

c)

13 protons in its nucleus

d)

Both b and c

69.

How much current flows in the filament of a 300-W bulb connected to the 120-V power line?

a)

2.5 A

b)

3.6 A

c)

0.4 A

d)

2.0 A

70.

A current of 1000 micro A equals:

a)

1 A

b)

1ma

c)

0.01 A

d)

None of above

71.

The current in an open circuit is

a)

Normally very high because the resistance of an open circuit is 0 Ω.

b)

Usually high enough to blow the circuit fuse.

c)

Zero

d)

Slightly below normal.

72.

The resistance of a short circuit is

a)

Infinitely high

b)

Very high

c)

Usually above 1 kilos ohms

d)

Approximately zero

73.

With R constant,

a)

I and P are inversely related

b)

V and I are directly proportional

c)

V and I are inversely proportional

d)

None of above

74.

A voltage source produces an IR drop of 40V across a 20-Ω R1,60 V across a 30-Ω R2, and 180 V across a 90- Ω R3, all in series. According to Kirchhoff's voltage law, how much is the applied voltage VT?

a)

280 v

b)

140 V

c)

90 V

d)

380V

75.

Once capacitor is fully charges it act as?

a)

Reservoir

b)

Resistor

c)

Dam

d)

Insulator

76.

Electrotherapy generally includes various forms of therapeutic applications using heat as the primary source of energy.

a)

True

b)

False

c)

Somehow true

d)

None of above

77.

A non-surgical treatment approach characterized by the treatment of various diseases and disorders with the help of electricity or electrical means:

a)

Phototherapy

b)

Electrotherapy

c)

Heliotherapy

d)

Cryotherapy

78.

A force of 25 newton's (25N) is applied by the therapist to the shoulder of the patient at an angle of 90". What will be the component force Fv?

a)

25 N

b)

2.5 N

c)

0.25 N

d)

2.55 N

79.

In the phase of restraint, which force is responsible for prevention of the foot from sliding forward and maintains the momentum of the body.

a)

Resolution of forces

b)

Summation of force

c)

Vertical force

d)

Horizontal force

80.

In rolling friction, surface deformation results in.

a)

Increased surface contact and shear.

b)

Decreased surface contact and shear.

c)

Increased point contact and shear.

d)

Decreased point contact and shear.

81.

The moment arm and action arm are frequently not the same?

a)

True

b)

False

c)

Somewhat true

d)

None of above

82.

Wobble board is used for?

a)

Muscle power

b)

Muscle balance

c)

Muscle health

d)

Muscle tone

83.

Which of the following sequence regarding line of gravity is correct?

a)

The vertex, through the Centre of gravity, behind the ankles and within the base

b)

The vertex, through the Centre of gravity, in front of the ankles and outside the base

c)

The vertex, through the Centre of gravity, in front of the knee and within the base

d)

The vertex, through the Centre of gravity, in front of the ankles and within the base

84.

If the line of gravity falls outside the supporting base the up thrust of the base cannot oppose, which of the following:

a)

Upward pull

b)

Upward push

c)

Downward pull

d)

Downward push

85.

It is expressed in terms of movement and interaction of electrons?

a)

Atom

b)

Molecule

c)

Electricity

d)

Element

86.

Any of more than 100 fundamental substances that consist of atoms of only one kind are called:

a)

Atom

b)

Molecule

c)

Electricity

d)

Element

87.

In 1932 James Chadwick done an experiment and showed that neutrons are made from other particles called quarks.

a)

Neutrons are made from one 'up' quark and one 'down' quarks.

b)

Neutrons are made from one 'up' quark and two 'down' quarks.

c)

Neutrons are made from two 'up' quark and one 'down' quarks.

d)

Neutrons are made from two 'up' quark and two 'down' quarks.

88.

Why inert gases ere used in light bulbs?

a)

To protect from oxidation

b)

To protect from sparking

c)

To protect from heat

d)

To protect from current

89.

According to nature of heat, which of following is correct:

a)

Heat moves in both directions

b)

Heat moves in one direction

c)

Heat moves in all direction

d)

All of above

90.

Generation of heat from another energy form such as sound will refer to ultrasound therapy, such type of heat transfer is called:

a)

Conduction

b)

Convection

c)

Radiation

d)

Conversion

91.

Which of the following is not the feature of electric field lines?

a)

The lines originate from positive charge towards a negative charge.

b)

The number of lines drawn leaving a positive charge is proportional to the magnitude of the charge.

c)

Two field lines can cross each other.

d)

The line must be perpendicular to the surface of the charge

92.

The distribution of electrons in the orbital rings around an atom's nucleus determines its ----- property.

a)

Chemical

b)

Electrical

c)

Mechanical

d)

None of above

93.

Regarding light bulbs, which of the following statement is true:

a)

The lower the power, the dimmer the bulb.

b)

The lower the power, the brighter the bulb.

c)

The higher the power, the dimmer the bulb.

d)

The higher the power, the brighter the bulb

94.

Which of the following refers to the treatment of diseases and disorders with the help of light?

a)

Phototherapy

b)

Electrotherapy

c)

Heliotherapy

d)

Cryotherapy

95.

Which of the following is not included in classification of Therapeutic currents?

a)

Direction

b)

Frequency

c)

Voltage

d)

Biofeedback

96.

According to human body, optimum velocity at which an individual can perform an exercise with maximum muscular efficiency is called:

a)

Displacement

b)

Velocity

c)

Acceleration

d)

Natural speed

97.

The rate of change of displacement in time is called:

a)

Displacement

b)

Velocity

c)

Acceleration

d)

Natural speed

98.

In 1897, J. J. Thomson discovered,

a)

Neutron

b)

Electrons

c)

Atom

d)

Protons

99.

Following are the factors affecting Capacitance except?

a)

The Area of the plate

b)

High voltage side of the circuit.

c)

Distance between the plates

d)

Type of dielectric material

100.

Ohm's law holds for

a)

Metallic conductors at low-temperature

b)

For electrolytes, when current passes through them

c)

Metallic conductors at high-temperature

d)

For diode when the current flow

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