Match List - I with List - II.
| List-I | List-II |
| Scientist | Contribution to Optics |
| (A) Christian Huygens | (I) Wavefronts |
| (B) Isaac Newton | (II) Diffraction of light |
| (C) Thomas Young | (III) Dispersion of light |
| (D) Fresnel | (IV) Interference of light |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) - (I), (B) - (III), (C) - (IV), (D) - (II)
Each scientist is linked with the optical idea or effect he first explained or demonstrated.
(A) Christian Huygens — this matches (I) Wavefronts. Huygens put forward the wave theory of light and the principle that every point of a wavefront acts as a source of secondary wavelets, whose envelope gives the new wavefront.
(B) Isaac Newton — this matches (III) Dispersion of light. With a glass prism Newton split white light into its colours and showed that the colours were already present in the white light.
(C) Thomas Young — this matches (IV) Interference of light. His double-slit experiment produced bright and dark fringes, the first firm evidence that light waves interfere.
(D) Fresnel — this matches (II) Diffraction of light. Fresnel used the wave theory to explain the bending of light round obstacles and the fringes at the edges of shadows.