Question

Assertion A: Solar pond is an artificially constructed water pond in which significant temperature rise occurs in lower region.
Reason R: The salinity gradient (salt-slope) gives pond a vertical density difference creating a non-convecting environment.
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is NOT the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Hint:

Solar pond works on the principle of salt gradient.
The salt gradient prevents convection.
Heat is trapped in the lower region.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Solar pond is a device used to collect solar energy.
It uses a salinity gradient to trap heat.

Step 2: Key Formula or Approach:
No specific formula.
Need to understand the working of a solar pond.

Step 3: Detailed Explanation:
A solar pond has a high salt concentration at the bottom.
This creates a density gradient.
The density gradient prevents convection (mixing of water).
Thus, the lower region gets heated and retains heat.
This is the principle of a solar pond.
Both A and R are correct, and R explains A.

Step 4: Final Answer:
Both A and R are correct, and R is the correct explanation of A.
Hence, the correct option is (A).