The set of all possible combinations of the two inputs that yield the same maximum possible level of output is called?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Isoquant Curve
A firm can often make the same output in different ways, with more workers and fewer machines or the other way round. All the combinations of the two inputs that yield the same maximum possible level of output lie on one curve, the isoquant (‘equal quantity’). It shows the production function much as an indifference curve shows bundles giving the same satisfaction.
Why the other options are incorrect
Option (2) Marginal Product curve — Incorrect. This curve shows the change in output from one more unit of a single input, the other inputs held fixed. It is about one input, not about combinations of two inputs.
Option (3) Production Possibility Curve — Incorrect. It shows combinations of two goods that an economy can produce with its resources. It is about outputs, while an isoquant is about inputs.
Option (4) Total Production curve — Incorrect. This curve shows total output as one input varies, with the others fixed. It traces one input against output, not combinations giving the same output.
Note: A same/similar question was asked in CUET (UG) in the papers below.
| 2026 | 2025 | 2024 | 2023 | 2022 |
| 21-05 S2 | 13-05 S2* 22-05 S1* 29-05 S2* | – | – | – |
* A similar question.
NCERT (2025-26): “Isoquant … In Chapter 2, we have learnt about indifference curves. Here, we introduce a similar concept known as isoquant. It is just an alternative way of representing the production function. Consider a production function with two inputs labour and capital. An isoquant is the set of all possible combinations of the two inputs that yield the same maximum possible level of output.…” |