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A narrow beam of 5000 monoenergetic photons is reduced to 1000 photons by a copper absorber 2 cm thick. What is the linear attenuation coefficient of the copper absorber for these photons?

Three HVLs would reduce the intensity of the beam to _____ of its original value.

No one kind of beam is ideal for radiation therapy.

If we consider a photon beam traversing through a material, the fraction of photon energy transferred into KE of charged particles per unit thickness of absorber is given by:

Match the following muscles with the correct number.External oblique 1.

The medial rectus muscle and lateral rectus muscle pull the eye in the same direction.

Match the following muscles with the correct number.Platysma 1.

Match the following muscles with the correct number.Sartorius 1.

Match the following muscles with the correct number.Vastus medialis 1.

Match the following muscles with the correct number.Triceps brachii 1.