The fission chain reaction in a nuclear reactor can be controlled by introducing _______________?
Correct answer: C. Cadmium rods
- A. Iron rods
- B. Graphite rods
- C. Cadmium rods
- D. Platinum rods
Explanation
Cadmium rods absorb neutrons, so inserting them into a reactor reduces the number of neutrons available to cause further fission and controls the chain reaction. Graphite rods are mainly moderators that slow neutrons, so choosing graphite confuses moderation with control.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Newton's Laws of Motion
Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Newton's Laws of Motion questions
The dimension of force is__________________?
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?
Who discovered the inverse square law for gravity ?
Newtons laws do not hold good for particles_______________?
Which law of motion is also called law of inertia ?
Time rate of change of momentum is equal to____________________?