Question

If other inputs are constant, then an increase in the use of one input causes what changes in marginal output?

• A. It decreases
• B. It increases
• C. It remains constant
• D. None of these

Hint:

Marginal output increases when more of one input is used, provided other inputs remain constant.

Answer 1

The Correct Option is B

Step 1: Understanding marginal output and inputs.
Marginal output refers to the additional output produced by using one more unit of input, while keeping other inputs constant. According to the law of increasing returns (in the short run), as more units of one input are used with other inputs constant, the marginal output initially increases.

Step 2: Analyzing the options.
(A) It decreases: This is incorrect. Typically, marginal output increases with increased input use in the short run, before it starts decreasing.
(B) It increases: Correct. As per the law of increasing returns, marginal output increases when more of one input is used, assuming other inputs are held constant.
(C) It remains constant: This is incorrect. Marginal output typically changes with the increase in input use.
(D) None of these: This is incorrect, as the correct answer is (B) It increases.

Step 3: Conclusion.
The correct answer is (B) It increases, as marginal output increases with the increase in the use of one input.