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A 7.6 cm (3 inches) thick test specimen is radiographed with a source having size of 1.3 cm (1/2 inch), the film is placed in contact with the test specimen. The source to film distance is 40.6 cm (16 inches).The geometric unsharpness obtained is:

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Question:

A 7.6 cm (3 inches) thick test specimen is radiographed with a source having size of 1.3 cm (1/2 inch), the film is placed in contact with the test specimen. The source to film distance is 40.6 cm (16 inches).The geometric unsharpness obtained is:

A.

0.1 cm

B.

0.3 cm

C.

0.5 cm

D.

1.0 cm

Answer» b. 0.3 cm

Note: The above multiple-choice question is for all general and Competitive Exams in India.