Size of the focal spot influences radiographic 1) Definition 2) Density 3) Contrast 4) All of the above
RadiologyAnswer: 1
The Compton effect is seen when 1) X-rays strike on film 2) X-rays strike on skin 3) X-rays interact with matter 4) X-rays interact with emulsion coating on film
RadiologyAnswer: 3
Caries which can be best diagnosed on radiographs 1. Occlusal caries 2. Root surface caries 3. Interproximal caries 4. Surface caries on buccal surface
RadiologyAnswer: 3
The substance most commonly used for protection against X-ray radiations is 1) Zinc 2) Steel 3) Lead 4) Porcelain
RadiologyAnswer: 3
The facial aspect of an intraoral film is determined by the 1) Anatomic landmarks 2) Concavity of the embossed dot 3) Convexity of the embossed dot 4) Curvature of the arch
RadiologyAnswer: 3
The effect of short exposure on contrast of film 1) Contrast increases 2) Contrast decreases 3) Contrast is constant 4) Contrast is variable
RadiologyAnswer: 2
Horizontal unfavourable or favourable fractures of mandible can be viewed best in 1) Lateral oblique 30 degrees 2) Lateral oblique 15 degrees 3) PA view of mandible 4) Submentovertex view
RadiologyAnswer: 1
The principle hazard to operator and patient is produced by what type of radiation 1) Gamma 2) Primary 3) Secondary 4) None of the above
