MDCB Practice Set 3 - Test 12 2016

MDCB Practice Set 3 - Test 12 2016 Questions with Complete Solutions (Latest 2025)

1. The energy equivalent of the mass of an electron at rest is:

• 0.220 MeV
• 0.511 MeV
• 0.667 MeV
• 1.250 MeV - Correct Answers ✅B

2. The force which holds the nucleus together is:

• strong nuclear.
• electromagnetic.
• weak nuclear.
• gravitational. - Correct Answers ✅A
• The X-ray contamination in electron beam therapy is a

result of the electrons interacting with both the accelerator's collimating system and body tissues.The type of interaction which takes

place is:

• photoelectric
• Compton
• pair production
• bremsstrahlung - Correct Answers ✅D 1 / 2

MDCB Practice Set 3 - Test 12 2016 Questions with Complete Solutions (Latest 2025)

• The energy required to remove an inner shell electron from

its orbit is called:

• ionization energy
• binding energy
• kinetic energy
• transition energy - Correct Answers ✅B
• Which of the following is a potential late toxicity of pre-

operative radiotherapy in the treatment of rectal carcinoma?

• small-bowel obstruction.
• polycythemia.
• lymphedema
• bladder perforation. - Correct Answers ✅A
• A customized bite block may be used to do which of the

following?Secure a reproducible jaw position.

• Reduce respiration motion of the oral cavity
• Allow port film registration.
• Preserve dental integrity during treatment. - Correct

Answers ✅A

• / 2