Radiographic Testing Multiple choice Question & Answers (MCQ)

1. Isotopes have different

(a) Nuclear charges
(b) Number of electrons
(c) Atomic weights
(d) Atomic numbers

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Answer is (c)

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2. The energy (E) of a photon is related to its wavelength (L) by the equation (where h = Planck's constant)

(a) E=hc/L
(b) E=cL
(c) E=hL
(d) E=L/hL

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Answer is (a)

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3. Magnetic particle testing (MPT) is a non destructive examination method used for finding

(a) Work piece and the film
(b) Source and the film
(c) Operator and the film
(d) Object and the film

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Answer is (a)

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4. Which of the following types of intensifying screens are not used in industrial radiography

(a) Lead
(b) Fluorescent
(c) Silver halide
(d) All of the above

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Answer is (c)

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5. Which isotope artificially produced for industrial use

(a) Ra-226
(b) Ir-192
(c) Co-60
(d) b & c Both

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Answer is (d)

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6. One half value layer of lead for Iridium-192 is approximately

(a) 12 mm
(b) 16 mm
(c) 2 mm
(d) 8 mm

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Answer is (c)

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7. One half value layer of lead for Cobalt-60 is approximately

(a) 12 mm
(b) 16 mm
(c) 2 mm
(d) 8 mm

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Answer is (a)

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8. The film processing step in which the undeveloped silver bromide is removed from the film emulsion is called

(a) Development
(b) Stop Bathing
(c) Fixing
(d) Rinsing

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Answer is (a)

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9. The intensifying action of lead screens is caused by

(a) Secondary X ray emission
(b) Secondary gamma ray emissions
(c) Fluorescence of lead screens
(d) Electron emission

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Answer is (d)

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