Ultrasound Quiz (Theory)
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- Question 1 of 11
1. Question
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is used to form of babies in the in a process called scanning.
Ultrasound into the body from image produced.
Correct 7 / 7 PointsIncorrect / 7 Points -
- Question 2 of 11
2. Question
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is a region on a wave where medium are or where the pressure is .
is a region on a wave where the of medium are far apart and pressure is .
Correct 9 / 9 PointsIncorrect / 9 Points -
- Question 3 of 11
3. Question
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( i ) V = lambda.
(ii ) of audible sound wave is Hz – 20kHz ( very less than ultrasound)
Since audible sound F < ultrasound of audible sound will be . .
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 4 of 11
4. Question
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Used to detect in the sea.
Used to detect in womb ( pre – natal scanning )
Correct 2 / 2 PointsIncorrect / 2 Points -
- Question 5 of 11
5. Question
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( i ) Pressure of a liquid = p h
= 1 x 10 ^ 3 x 10 x
Pressure = x 10 ^ 6 Pa
( ii ) Total pressure at depth of 120 m = Atmospheric pressure
Total pressure = 1.2 x 10 ^ 6 Pa + x 10^ 5 Pa
= x 10 ^ 6 Pa ( final answer ).
Correct 8 / 8 PointsIncorrect / 8 Points -
- Question 6 of 11
6. Question
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( i ) Force = Area.
Force = 1.3 x 10 ^ 6 x
= x 10 ^ 5 N.
( ii ) 1) Additional resistance acting on the from the water.
2) Additional force applied by the inside the in an direction onto the .
Correct 10 / 10 PointsIncorrect / 10 Points -
- Question 7 of 11
7. Question
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( i ) is an example of a wave that comprises and rarefactions.
( ii ) water .
These vibrating with one another .
waves consisting of and rarefactions.( iii )1) Speed of the in water.
2 ) Distance = speed / 2
( IV ) Used to detect in wombs ( pre_natal scanning ) .
Correct 13 / 13 PointsIncorrect / 13 Points -
- Question 8 of 11
8. Question
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Frequency of transmitter = 1
Time period ( T ) = Time between 2 consecutive S pulses
Time period = x 1.0 x 10 ^ -6 s
= x 10 ^ -6 s
Number of pulses sent by source in 1 sec =
= 1 / 6 x 10 ^ – 6
= x 10 ^ 5 pulses ( final answer )
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 9 of 11
9. Question
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- Some is absorbed by the .
Not all of the is back from the surface of the .
- Some is absorbed by the .
Correct 5 / 5 PointsIncorrect / 5 Points -
- Question 10 of 11
10. Question
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( V ) Wavelength = Frequency
= 4000 / x 10 ^ 6
= x 10 ^ -4 m. ( final answer )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 11 of 11
11. Question
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is a wave comprising and rarefactions.
It has a frequency than the range of kHz – 25 KHz.
Correct 5 / 5 PointsIncorrect / 5 Points -