Physics quiz

1. What is the minimum plasma temperature required for carbon nuclear fusion?

• a. Millions of degrees Celsius

• b. Thousands of degrees Celsius

• c. Room temperature

• d. Below freezing point

Answer explanation

At extreme temperature the deuterium and tritium gas mixture becomes a plasma. The requirement for a successful fusion reaction is formation of plasma

2. What is the concept of ignition in carbon fusion?

• a. The point at which the reactor shuts down

• b. The point at which the fusion reactions become self-sustaining

• c. The point at which the reactor reaches its maximum power output

• d. The point at which the reactor is activated for the first time

4. What is a crucial requirement for the success of carbon fusion?

• a. Sufficient plasma density

• b. High external temperature

• c. Large amounts of carbon fuel

• d. Extreme external pressure

6. What is the primary fuel source in carbon nuclear fusion?

• a. Uranium-235

• b. Deuterium

• c. Hydrogen

• d. Carbon dioxide

High temp is required for:

• Fuel to reach required velocity

• Fuel to form plasma

• Fuel to combust

• Fuel to collide more frequently

For fusion reaction to be sustainable the condition is

• The energy released must be more than energy supplied

• Energy supplied must be more than energy released

• Lawson criterion must not be exceeded

• Collisions must be frequent

Critical ignition temperature is the

• Minimum temperature required

• Maximum kinetic energy is required

• Maximum temperature required

• Minimum temperature required

SI unit of Lawson criterion

• K/m3

• S/m3

• S/k

• m3/s

D) if confinement time is not reached:

E) Tritium is more easily found than deuterium.

True

False

• i) nuclear fusion will not take place.

• ii)there will be no net energy gain.

• iii)heat of fusion will be too high.

• iv)density of fuel will be too high

E) Tritium is more easily found than deuterium.

• True

• False