When x- ray incident to the layer of Aluminum, and the transmitted intensity was 10 % from the original incident ray when the thickness of Aluminum was 2 cm, if the density of Aluminum is (2.7gm/cm.^3), then the Half *: Value Layer equal to 1.626 cm. 0.601 cm. 3.108 cm. O

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Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.