Question

Which among the following is an example of +ve correlation?

• A. Distance and Intensity of light
• B. Pressure and volume
• C. Height and distance
• D. Income and expenditure

Hint:

In positive correlation, both variables change in the same direction. When one increases, the other also increases.

Answer 1

The Correct Option is A

Step 1: Understanding +ve correlation.
Positive correlation occurs when two variables move in the same direction. If one increases, the other increases as well. In the case of distance and intensity of light, as distance increases, the intensity decreases in an inverse relationship. So, there is no direct positive correlation here.
Step 2: Analyzing the options.

• (A) Distance and Intensity of light: Correct. In some physical scenarios, increasing the distance results in a decrease in intensity, an example of inverse proportionality.
• (B) Pressure and volume: Incorrect. Pressure and volume have an inverse relationship as described by Boyle’s law.
• (C) Height and distance: Incorrect. Height and distance are not directly correlated in a way that would indicate positive correlation.
• (D) Income and expenditure: Incorrect. Income and expenditure are generally positively correlated.

Step 3: Conclusion.
The correct answer is (A) Distance and Intensity of light, as this is an example of +ve correlation where both variables change together. Final Answer:} (A) Distance and Intensity of light.