RADIATION QUANTITIES AND UNITS

Question 1

RADIATION QUANTITIES AND UNITS:

Answer 1

Base Quantities
Derived Quantities
Special Quantities

Question 2

BASE QUANTITIES:

Answer 2

•Length - measured in meter (m)
• Mass - measured in kilogram (kg)
• Time - measured in second (s)
• Charge - measured in Coulomb (C)

Question 3

DERIVE QUANTITIES:

Answer 3

• Energy
• Power
• Work
• Momentum
• Force
• Acceleration

Question 4

Measured in Joules (J), electron-volt (eV), erg, and calorie

Answer 4

Energy

Question 5

Measured in Watt (W)

Answer 5

Power

Question 6

Measured with the same units used for energy

Answer 6

Work

Question 7

Denoted by the symbol “p”

Answer 7

Momentum

Question 8

Measured in newton (N)

Answer 8

Force

Question 9

Meters per second per second

Answer 9

Acceleration

Question 10

SPECIAL QUANTITIES:

Answer 10

Exposure

Kerma
Absorbed Dose

Effective Dose

Radioactivity

Question 11

Expresses the concentration of radiation delivered to a specific point

Measured in roentgen (R) or C/kg

Answer 11

Exposure

Question 12

Kinetic energy released per unit mass

The unit of radiation exposure or intensity

Measured in Gray (Gy) or J/kg

Answer 12

Kerma

Question 13

Kinetic energy released per unit mass of air; measured in Gya

Answer 13

Air Kerma

Question 14

Radiation energy absorbed per unit mass of body tissue

Measured in Gray (Gyt) or J/kg

Answer 14

Absorbed Dose

Question 15

The dose received by radiation workers and population

Measured in Sievert (Sv)

Answer 15

Effective Dose

Question 16

The number of nuclear disintegrations per unit time (dps)

Process of Release of Charge, Energy & Particle

Answer 16

Radioactivity