Which of the following statements on the use of X-rays is incorrect? X-rays are used
A
in hospitals to obtain photogaphs of tissues and bones in the body
B
for the treatment of malignant growths like cancer cells
C
in detecting fingerprints
D
to reveal hidden flaws in metal castings and welded joints
E
to detect alternations which have been made to works of art
Verified Correct Answer: C.
Physical Principles & Numerical Solution
-The radiography of cultural objects is the use of radiography to understand intrinsic details about objects. Most commonly this involves X-rays of paintings to reveal underdrawing, pentimenti alterations in the course of painting or by later restorers, and sometimes previous paintings on the support.
-Hard X-rays are used for destroying cancerous cells
-Soft X-rays are used in medicine to photograph human parts
-. In the present work, the spatial elemental imaging capabilities of micro-X-ray fluorescence (MXRF) were used to visualize fingerprint patterns based on inorganic elements present in the prints.
However; Cobalt-60 is widely used in industrial radiography for the rapid checking of faults in wields and castings.
Source: WAEC / JAMB / NECO Classroom Archive (Record #29090)