Question

Match List-I with List-II. List-I: A. X-ray, B. Visible light, C. Infrared radiations, D. Ultraviolet radiation. List-II: I. \(400\,nm-700\,nm\), II. \(0.01\,nm-10\,nm\), III. \(700\,nm-1\,mm\), IV. \(10\,nm-400\,nm\).

• A. A-I, B-II, C-III, D-IV
• B. A-II, B-I, C-III, D-IV
• C. A-IV, B-III, C-I, D-II
• D. A-IV, B-III, C-I, D-II

Hint:

Visible light is \(400\,nm-700\,nm\). Infrared has longer wavelength than visible light, while ultraviolet and X-rays have shorter wavelengths.

Answer 1

The Correct Option is B

Concept:
Electromagnetic radiations are classified according to their wavelength. Different radiations occupy different wavelength ranges.

Step 1: Match X-ray.
X-rays have very short wavelength, generally: \[ 0.01\,nm-10\,nm \] \[ A \rightarrow II \]

Step 2: Match visible light.
Visible light lies approximately in the range: \[ 400\,nm-700\,nm \] \[ B \rightarrow I \]

Step 3: Match infrared radiation.
Infrared radiation has wavelength greater than visible light: \[ 700\,nm-1\,mm \] \[ C \rightarrow III \]

Step 4: Match ultraviolet radiation.
Ultraviolet radiation lies approximately between: \[ 10\,nm-400\,nm \] \[ D \rightarrow IV \] Thus, the correct matching is: \[ A-II,\ B-I,\ C-III,\ D-IV \] \[ \therefore \text{Correct Answer is (B)} \]