Match List I with List II and select the correct answer using the code given below the Lists :
| List I (Explanation) |
List II (Term) |
|---|---|
| A. Colour of an opaque object | 1. Fluorescence |
| B. Colour observed through a coloured glass | 2. Reflection |
| C. Bending of the image of a rod partially dipped in water | 3. Transmission |
| D. Shining observed when one steps on an earthworm | 4. Refraction |
1 3 4 2
1 4 3 2
2 4 3 1
2 3 4 1
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CAPF – 2014
A. Colour of an opaque object: Opaque objects get their colour by absorbing certain wavelengths of light and reflecting others. The colour we see is the colour of the light reflected by the object. This matches term 2. Reflection.
B. Colour observed through a coloured glass: Coloured glass allows certain wavelengths of light to pass through while absorbing others. The colour we see is the colour of the light transmitted through the glass. This matches term 3. Transmission.
C. Bending of the image of a rod partially dipped in water: This phenomenon occurs because light changes speed as it passes from one medium (air) to another (water), causing it to bend at the interface. This bending of light is called refraction. This matches term 4. Refraction.
D. Shining observed when one steps on an earthworm: With A, B, and C matched to 2, 3, and 4 respectively, the remaining term for D is 1. Fluorescence is the emission of light by a substance after it has absorbed light. While shining can often be explained by reflection, it is possible that some biological substances exhibit fluorescence. Given the other standard matches, this is the most likely intended pairing in the context of the question’s options.
Matching: A-2, B-3, C-4, D-1. This corresponds to option D.