Change in speed of ultrasound causes
A) reflection
B) diffraction
C) refraction
D) image
Correct Answer:
Verified
Q11: Soft x-rays have
A)high energies
B)low energies
C)lowest frequency
D)longest wavelength
Q12: Intensity of x-rays can be increased by
Q13: Bone thickness is equal to {{}}
A)cΔt/2
B)cΔt
C)c/t
D)t/2
Q14: Hardness of x-ray beam can be increased
Q15: In x-ray production, the kinetic energy of
Q17: Type of x-rays used to detect break
Q18: Wavelength of 2.0 MHz ultrasound waves in
Q19: Intensifier screens reduces the patient's exposure to
Q20: Contrast media consist of elements with
A)lower atomic
Q21: Thickness of material which decreases intensity of
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