Diffraction demonstrates light's: MCQ with Answer and Explanation

Diffraction demonstrates light's:
A. Dual nature
B. EM nature
C. Wave nature
D. Particle nature
Answer: Option C
Solution (By JKSSB Mock Tests)
Diffraction (bending around obstacles) is wave phenomenon explained by Huygens' principle. Particle model predicts straight-line propagation. Memory aid: 'Diffraction/interference ⇒ wave nature; photoelectric ⇒ particle nature'. Wave-particle duality frequently tested in competitive exams.

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Practice More Physics Questions

Question #1
Rainbow is formed due to
A. Total internal reflection
B. Diffraction
C. Dispersion and internal reflection
D. Comet

Correct Answer: Option C


Explanation:
Rainbow is formed by dispersion, refraction, and internal reflection of sunlight in water droplets. Two refractions and one internal reflection give primary bow. Secondary bow has two internal reflections. Not diffraction.

This question belongs to: Science Physics
Question #2
The working of a refrigerator is based on
A. Photoelectric effect
B. Heating effect of current
C. Magnetic effect
D. Evaporation and condensation of refrigerant

Correct Answer: Option D


Explanation:
Refrigerant evaporates inside absorbing heat, compressed outside releasing heat, cycle repeats.

This question belongs to: Science Physics
Question #3
The time period of a mass-spring system depends on
A. Both mass and spring constant
B. Mass only
C. Gravity
D. Spring constant only

Correct Answer: Option A


Explanation:
T = 2π√(m/k). Depends on mass and stiffness.

This question belongs to: Science Physics