Question

Diffraction and refraction indicate
1. Wave nature
2. particle nature
3. both wave and particle nature
4. None of the above

Answer 1

Correct Answer - Option 1 : Wave nature

CONCEPT:

Corpuscular theory of light	Wave theory of light
Issac Newton was a pioneer of this theory.	Wave theory was proposed by Christiaan Huygens.
According to this theory, light is made of discrete particles known as corpuscles.	According to this theory, light is a wave.
It could explain the rectilinear propagation of light and later on the photoelectric effect and the black body radiation.	It could explain interference, diffraction, and refraction of light.

EXPLANATION:

• In the photoelectric experiment, light behaves as a particle.
• When light undergoes diffraction and refraction it behaves as a wave. Hence, diffraction and refraction indicate that light is a wave. Therefore, option 1 is correct.