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## X-ray Attenuation MCQ Quiz : IGCSE Physics MCQs

MCQ 1: Gradual decrease in x-ray beam intensity as it passes through material is called

A) attenuation
B) decay
D) imaging

MCQ 2: Attenuation coefficient of bone is 600 m-1 for x-rays of energy 20 keV and intensity of beam of x-rays is 20 Wm-2, then intensity of beam after passing through a bone of 4mm is

A) 3 Wm-2
B) 2.5 Wm-2
C) 2.0 Wm-2
D) 1.8 Wm-2

MCQ 3: Bones look white in x-ray photograph because

A) they are bad absorbers of x-rays
B) they reflect x-rays
C) they are good absorbers of x-rays
D) they are bad absorbers of ultraviolet rays

MCQ 4: Attenuation coefficient depends on

A) frequency of x-ray photons
B) wavelength of x-ray photons
C) energy of x-ray photons
D) amplitude of x-ray photons

MCQ 5: As the x-rays pass through matter, it's intensity

A) increases
B) decreases
C) remains constant
D) may increase or decrease depending on the object

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