RT LEVEL II EXAM 2024 ACTUAL QUESTIONS WITH COMPLETE
SOLUTIONS VERIFIED. GRADED A++
Low voltage x ray tubes are generally fitted with windows made of:
A) plastic
B) beryllium
C) glass
D) lead
B) beryllium
If it were necessary to radiograph a 7 inch thick steel product, which of the
following gamma ray sources would most likely be used:
A) cobalt-60
B) thulium- 170
C) iridium- 192
D) cesium-137
A) Cobalt-60
Cobalt-60 gamma ray source has an approximate practical thickness limit of:
A) 2 1/2 inches of steel or its equivalent
B) 4 inches of steel or its equivalent
C) 9 inches of steel or its equivalent
D) 11 inches of steel or its equivalent
C) 9 inches of steel or its equivalent
The absorption of gamma rays from a given source when passing through matter
depends on:
A) the atomic number, density, and thickness of the matter
B) the Young's modulus value of the matter
,C) the Poisson's ratio value of the matter
D) the specific activity value of the source
A) the atomic number, density, and thickness of the matter
The fact that gases, when bombarded by radiation, ionize and become electrical
conductors make them useful in:
A) X-ray transformers
B) X-ray tubes
C) masks
D) radiation detection equipment
D) radiation detection equipment
The uneven distribution of developed grains within the emulsion of a processes
x-ray film causes the subjective impression of:
A) graininess
B) streaks
C) spots
D) white scum
A) graininess
Of the following, the source providing the most penetrating radiation is:
A) cobalt-60
B) 220 kVp X-ray tube
C) 15 MeV X-ray betatron
D) electrons from iridium-192
C) 15 MeV X-ray betatron
The gamma-ray intensity at one foot from a one curie source of radioactive
cobalt-60 is nearest:
A) 15 roentgens per hour
B) 1,000 roentgens per hour
, C) 1 roentgens per minute
D) 10 milliroentgens per day
A) 15 roentgens per hour
The specific activity of an isotopic source is usually measured in:
A) million electron volts
B) curies per gram
C) roentgens per hour
D) counts per minute
B) curies per gram
Which of the following isotopes has the longest half-life?
A) Thulium-170
B) Cobalt-60
C) Iridium-192
D) Cesium-137
D) Cesium-137
An X-ray film having wide latitude also has, by definition:
A) poor definition
B) low contrast
C) high speeds
D) none of the above
B) low contrast
One method of reducing radiographic contrast is to:
A) increase the distance between the radiation source and the object
B) decrease the distance between the object and the film
C) decrease the wavelength of the radiation used
D) increase development time within manufacturer's recommendations
C) decrease the wavelength of the radiation used
SOLUTIONS VERIFIED. GRADED A++
Low voltage x ray tubes are generally fitted with windows made of:
A) plastic
B) beryllium
C) glass
D) lead
B) beryllium
If it were necessary to radiograph a 7 inch thick steel product, which of the
following gamma ray sources would most likely be used:
A) cobalt-60
B) thulium- 170
C) iridium- 192
D) cesium-137
A) Cobalt-60
Cobalt-60 gamma ray source has an approximate practical thickness limit of:
A) 2 1/2 inches of steel or its equivalent
B) 4 inches of steel or its equivalent
C) 9 inches of steel or its equivalent
D) 11 inches of steel or its equivalent
C) 9 inches of steel or its equivalent
The absorption of gamma rays from a given source when passing through matter
depends on:
A) the atomic number, density, and thickness of the matter
B) the Young's modulus value of the matter
,C) the Poisson's ratio value of the matter
D) the specific activity value of the source
A) the atomic number, density, and thickness of the matter
The fact that gases, when bombarded by radiation, ionize and become electrical
conductors make them useful in:
A) X-ray transformers
B) X-ray tubes
C) masks
D) radiation detection equipment
D) radiation detection equipment
The uneven distribution of developed grains within the emulsion of a processes
x-ray film causes the subjective impression of:
A) graininess
B) streaks
C) spots
D) white scum
A) graininess
Of the following, the source providing the most penetrating radiation is:
A) cobalt-60
B) 220 kVp X-ray tube
C) 15 MeV X-ray betatron
D) electrons from iridium-192
C) 15 MeV X-ray betatron
The gamma-ray intensity at one foot from a one curie source of radioactive
cobalt-60 is nearest:
A) 15 roentgens per hour
B) 1,000 roentgens per hour
, C) 1 roentgens per minute
D) 10 milliroentgens per day
A) 15 roentgens per hour
The specific activity of an isotopic source is usually measured in:
A) million electron volts
B) curies per gram
C) roentgens per hour
D) counts per minute
B) curies per gram
Which of the following isotopes has the longest half-life?
A) Thulium-170
B) Cobalt-60
C) Iridium-192
D) Cesium-137
D) Cesium-137
An X-ray film having wide latitude also has, by definition:
A) poor definition
B) low contrast
C) high speeds
D) none of the above
B) low contrast
One method of reducing radiographic contrast is to:
A) increase the distance between the radiation source and the object
B) decrease the distance between the object and the film
C) decrease the wavelength of the radiation used
D) increase development time within manufacturer's recommendations
C) decrease the wavelength of the radiation used
