Question

Assertion (A): The rainbow is a natural spectrum of sunlight in the sky.
Reason (R) : Rainbow is formed in the sky when the sun is overhead and water droplets are also present in air.

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

Answer 1

The Correct Option is C

Step 1: Assessing the Assertion (A):
The assertion defines a rainbow as a natural spectrum of sunlight in the sky. This statement is factually correct, as rainbows are phenomena resulting from the refraction, reflection, and dispersion of sunlight by atmospheric water droplets, which splits light into its constituent colors.

Step 2: Evaluating the Reason (R):
The provided reason claims that rainbows form when the sun is overhead and water droplets are present. This explanation is inaccurate.
- While water droplets are essential, a rainbow does not form with the sun directly overhead.
- Rainbows are visible when the sun is positioned low in the sky (morning or late afternoon) and the observer is situated at an angle relative to the sunlight and water droplets. Direct overhead sunlight causes light to pass straight down, precluding rainbow formation.

Step 3: Determining the Validity:
- Assertion (A): True. The description of a rainbow as a natural spectrum of sunlight is accurate.
- Reason (R): False. The claim that rainbows form with the sun overhead is incorrect; they require the sun to be low in the sky.

Verdict:
The correct assessment is: Assertion (A) is true, while Reason (R) is false.