Question

Assertion (A): Red light signals are used to stop the vehicles on the road.
Reason (R): Red coloured light is scattered the most so as to be visible from a large distance.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
• C. (A) is true, but (R) is false.
• D. (A) is false, but (R) is true.

Answer 1

The Correct Option is C

Step 1: Understanding the Assertion (A):
The assertion states that red light signals are used to stop vehicles on the road. This is correct because in traffic control systems, the red light is universally used to signal vehicles to stop. Red is chosen for this purpose because it has high visibility and is associated with caution.

Step 2: Understanding the Reason (R):
The reason provided is that red-colored light is scattered the most, so it is visible from a large distance. This statement is incorrect. While it is true that red light has a longer wavelength, it is actually scattered less compared to shorter wavelengths like blue or violet. Shorter wavelengths scatter more due to Rayleigh scattering, which is why the sky appears blue.

Step 3: Explanation of the Relationship Between Assertion and Reason:
- The assertion is true: red light signals are used to stop vehicles on the road.
- However, the reason is false: red light is not scattered the most. It is less scattered compared to other colors like blue.

Step 4: Conclusion:
The correct answer is: (A) is true, but (R) is false.