Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question
Take CBT

Question

For light with a wavelength (λ) of 632 nm, what is the minimum path difference required to cause constructive interference?
Options
A 0 nm
Correct Answer
B 316 nm
C 632 nm
D 1264 nm
Correct Answer

Option A is the correct answer.

Detailed Explanation

On page 3, for constructive interference, the path difference Δρ is given as '0, λ, 2λ, 3λ ...'. The absolute minimum value in this series is 0 nm, which corresponds to the central bright fringe.

Hint

Consider the path difference for the central bright fringe.

Question Info

Course: PHY 104
Topic: Diffraction and Interference of light waves
Type: Objective
Difficulty: Not specified
Question 512 of 947
Previous Course Details Next