Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question
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Question

For constructive interference to occur at point D in Young's double-slit experiment, the path difference (Δρ) between the waves from the two slits must be equal to:
Options
A nλ/2, where n = 1, 3, 5, ...
B nλ, where n = 0, 1, 2, 3, ...
Correct Answer
C λ/4, 3λ/4, 5λ/4, ...
D Any multiple of λ/2.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 3 states: 'Constructive interference will occur at D when this difference in path length is equal to 0, λ, 2λ, 3λ ... ... ... ... ..., nλ'.

Hint

Recall the general condition for constructive interference in terms of wavelength (λ) and an integer (n).

Question Info

Course: PHY 104
Topic: Diffraction and Interference of light waves
Type: Objective
Difficulty: Not specified
Question 481 of 947
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