A low density image of the letter ‘B’ on a radiographic film would probably be caused by:

Related MCQs

• A radiographic exposure with 3700 GBq (100 Ci) source of Ir-192 using source to film distance of 60 cm results in a radiation intensity of 0.12 Gy/h (11.8 R/h) and a radiographic density of 2.5. The intensity of radiation needed to obtain the same density when the source to film distance is changed to120 cm is:
• A radiographic indication in a weld, characterised by two parallel dark lines in the film image, would probably be caused by:
• A radiograph is made using film X with an exposure of 10 mA-min. Film density obtained in the area of interest is 1.0. If it is desired to achieve a density of 2.0 in the area of interest, what exposure is required? (Log relative exposure = 1.1 for a density of 1.0 and 1.62 for a density of 2.0)
• A radiograph is made using film X with an exposure of 10 mA-min. Film density in the area of interest is 1.0. If it is desired to achieve a density of 2.0 in the area of interest, what exposure is required? (Log relative exposure = 1.1 for a density of 1.0 and 1.62 for a density of 2.0)
• A thin, jagged, dark line inside the weld image on a radiographic film is probably:
• Which of the following techniques would probably reduce the amount of back scattered radiation reaching the film during a radiographic exposure?
• Which of the following techniques would probably reduce the amount of scattered radiation reaching the film during a radiographic exposure?
• Which of the following techniques would probably reduce the amount of scattered radiation reaching the film during a radiographic exposure?
• A dark crescent shaped mark in the centre of a weld bead radiographic image would probably be:
• The density of the radiograph through the weld area is 3.2 while the density in the base metal is 2.9. This would probably indicate: