Medical Physics Final Exam Questions
With Correct Answers
. Which one of the following materials is the best insulator? - CORRECT
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ANSWER✔✔-B. rubber * | |
What is the wave length of a 5 Hz wave that travels with a speed of 10
| | | | | | | | | | | | | | | | |
m/s ? - CORRECT ANSWER✔✔-D. 2 m ***
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The ECG does not measure: - CORRECT ANSWER✔✔-D. Blood flow of
| | | | | | | | | | |
heart **** |
Which particle is responsible for a material's magnetic properties? -
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CORRECT ANSWER✔✔-D. electron ********
| | |
What are sound waves in the range above 20,000 hertz? - CORRECT
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ANSWER✔✔-B. Ultrasound ******** | |
Sound and light waves both - CORRECT ANSWER✔✔-B. obey the laws of
| | | | | | | | | | |
reflection ****
| |
,Small liquid drops assume spherical shape because - CORRECT
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ANSWER✔✔-Liquid tends to have the minimum surface area due to | | | | | | | | | |
surface tension ********** | |
If two bodies of different masses, initially at rest, are acted upon by the
| | | | | | | | | | | | | |
same force for the same time, then the both bodies acquire the same -
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CORRECT ANSWER✔✔-Momentum |
The refractive index for water is - CORRECT ANSWER✔✔-1,33
| | | | | | | |
The main idea for the eye pupil is - CORRECT ANSWER✔✔-To control
| | | | | | | | | | | |
the amount of light entering the eye
| | | | | | |
B. To control the sharpness of image forming on retina
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C. To adjust the focal depth
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D. All of above is correct answers ******
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Which of the following is / are true concerning magnetic forces and
| | | | | | | | | | | |
fields? - CORRECT ANSWER✔✔-A charged particle can move through a
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magnetic field without feeling a magnetic force.
| | | | | |
A particle of charge -0.04 C is projected with speed 2 × 104 m/s into a
| | | | | | | | | | | | | | | |
uniform magnetic field, B, of strength 0.5 T. If the particle's velocity as it
| | | | | | | | | | | | | |
enters the field is perpendicular to B, what is the magnitude of the
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magnetic force on this particle? - CORRECT ANSWER✔✔-400N
| | | | | | |
, If a wave has frequency f=1014 Hz and speed v = 100 m/s, what is its
| | | | | | | | | | | | | | | |
wavelength? - CORRECT ANSWER✔✔-100/10^14 = 1/10^12 = 10^-12
| | | | | | |
Two charges are separated by a distance d. If the distance between
| | | | | | | | | | | |
them is doubled, how does the electric potential between them
| | | | | | | | | |
change? - CORRECT ANSWER✔✔-Electrical potential is 1/2
| | | | | |
Electromagnetic waves are produced by - CORRECT ANSWER✔✔- | | | | | | |
Accelerating charges |
What do magnetic field around a bar magnet look like? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-They curve around the ends of the poles | | | | | | |
Point A is at lower electrical potential than point B. An electron between
| | | | | | | | | | | |
them on the line joining them will - CORRECT ANSWER✔✔-Move
| | | | | | | | | | |
towards B |
As an ultrasound pulse moves through tissue in a patient's body it will
| | | | | | | | | | | | |
undergo a change in - CORRECT ANSWER✔✔-Amplitude (energy)
| | | | | | |
Changing from a 2 MHz to a 5 MHz ultrasound transducer would
| | | | | | | | | | | |
generally produce: - CORRECT ANSWER✔✔-Shorter wavelength //
| | | | | | |
shorter ultrasound pulses | |
With Correct Answers
. Which one of the following materials is the best insulator? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-B. rubber * | |
What is the wave length of a 5 Hz wave that travels with a speed of 10
| | | | | | | | | | | | | | | | |
m/s ? - CORRECT ANSWER✔✔-D. 2 m ***
| | | | | | |
The ECG does not measure: - CORRECT ANSWER✔✔-D. Blood flow of
| | | | | | | | | | |
heart **** |
Which particle is responsible for a material's magnetic properties? -
| | | | | | | | | |
CORRECT ANSWER✔✔-D. electron ********
| | |
What are sound waves in the range above 20,000 hertz? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-B. Ultrasound ******** | |
Sound and light waves both - CORRECT ANSWER✔✔-B. obey the laws of
| | | | | | | | | | |
reflection ****
| |
,Small liquid drops assume spherical shape because - CORRECT
| | | | | | | | |
ANSWER✔✔-Liquid tends to have the minimum surface area due to | | | | | | | | | |
surface tension ********** | |
If two bodies of different masses, initially at rest, are acted upon by the
| | | | | | | | | | | | | |
same force for the same time, then the both bodies acquire the same -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Momentum |
The refractive index for water is - CORRECT ANSWER✔✔-1,33
| | | | | | | |
The main idea for the eye pupil is - CORRECT ANSWER✔✔-To control
| | | | | | | | | | | |
the amount of light entering the eye
| | | | | | |
B. To control the sharpness of image forming on retina
| | | | | | | | | |
C. To adjust the focal depth
| | | | | |
D. All of above is correct answers ******
| | | | | | |
Which of the following is / are true concerning magnetic forces and
| | | | | | | | | | | |
fields? - CORRECT ANSWER✔✔-A charged particle can move through a
| | | | | | | | | |
magnetic field without feeling a magnetic force.
| | | | | |
A particle of charge -0.04 C is projected with speed 2 × 104 m/s into a
| | | | | | | | | | | | | | | |
uniform magnetic field, B, of strength 0.5 T. If the particle's velocity as it
| | | | | | | | | | | | | |
enters the field is perpendicular to B, what is the magnitude of the
| | | | | | | | | | | | |
magnetic force on this particle? - CORRECT ANSWER✔✔-400N
| | | | | | |
, If a wave has frequency f=1014 Hz and speed v = 100 m/s, what is its
| | | | | | | | | | | | | | | |
wavelength? - CORRECT ANSWER✔✔-100/10^14 = 1/10^12 = 10^-12
| | | | | | |
Two charges are separated by a distance d. If the distance between
| | | | | | | | | | | |
them is doubled, how does the electric potential between them
| | | | | | | | | |
change? - CORRECT ANSWER✔✔-Electrical potential is 1/2
| | | | | |
Electromagnetic waves are produced by - CORRECT ANSWER✔✔- | | | | | | |
Accelerating charges |
What do magnetic field around a bar magnet look like? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-They curve around the ends of the poles | | | | | | |
Point A is at lower electrical potential than point B. An electron between
| | | | | | | | | | | |
them on the line joining them will - CORRECT ANSWER✔✔-Move
| | | | | | | | | | |
towards B |
As an ultrasound pulse moves through tissue in a patient's body it will
| | | | | | | | | | | | |
undergo a change in - CORRECT ANSWER✔✔-Amplitude (energy)
| | | | | | |
Changing from a 2 MHz to a 5 MHz ultrasound transducer would
| | | | | | | | | | | |
generally produce: - CORRECT ANSWER✔✔-Shorter wavelength //
| | | | | | |
shorter ultrasound pulses | |
