The term is used to refer to the product of wave velocity and density is:

Related MCQs

• 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 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:
• When a longitudinal wave is incident upon an inclined interface and is refracted at ninety degrees, the angle of the incident longitudinal wave is called:
• The relationship between the longitudinal wave incident angle and the refracted shear wave angle is defined by:
• 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:
• The longitudinal wave incident angle at which the refracted shear wave angle equals ninety degrees is called:
• The angle of a refracted shear wave generated as a sound wave passes at an angle through an acoustic interface is dependant on:
• An ultrasonic wave in which particle displacement is 90 degrees to the direction of wave propagation is called a:
• The longitudinal wave incident angle which results in formation of a rayleigh wave is called: