The principle of light wave was proposed by whom? 

CONCEPT:

Huygen's Wave Theory:

• According to wave theory, a luminous body is a source of disturbance in a hypothetical medium ether. This medium pervades all space.
• It is assumed to be transparent and having zero inertia. The disturbance from the source is propagated in the form of waves through space.
• The waves carry energy and momentum. Huygen assumed that the waves were longitudinal.
• Further when polarization was discovered, then to explain it, light waves were, assumed to be transverse in nature by Fresnel.
• This theory explains successfully, the phenomenon of interference and diffraction apart from other properties of light.
• Huygen's theory fails to explain the photoelectric effect, Compton's effect, etc
• The wave theory introduces the concept of a wavefront.

EXPLANATION:

• The principle of lightwave was proposed by Christiaan Huygens who believed that light was made up of waves vibrating up and down perpendicular to the direction of the light travels. Therefore option 3 is correct.
• Paul A M Dirac's work has been concerned with the mathematical and theoretical aspects of quantum mechanics and has won the Nobel Prize in Physics (1933) for "the discovery of new productive forms of atomic theory".
• Robert A. Millikan was an experimental physicist who belonged to America. He won the Nobel Prize in Physics (1923) for the measurement of the elementary electric charge and for his work on the photoelectric effect.
• Homi Jehangir Bhabha was an Indian nuclear physicist who is colloquially known as "father of the Indian nuclear program". He was awarded the Adams Prize (1942) and Padma Bhushan (1954) as well as he was also nominated for the Nobel Prize for Physics in 1951 and 1953–1956.