Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question
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Question

What is the path difference and resulting interference type at the central axis (point B in the center of the screen) in Young's double-slit experiment?
Options
A Path difference is λ/2, resulting in destructive interference.
B Path difference is λ, resulting in constructive interference.
C Path difference is 0, resulting in destructive interference.
D Path difference is 0, resulting in constructive interference.
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Page 4 clarifies: 'At point B in the centre of the screen, light travels the same distances P1, and P2 from each slit. The difference in path length Δp = 0 and constructive interference results in a bright central band.'

Hint

Consider the symmetry of the setup at the very center of the screen.

Question Info

Course: PHY 104
Topic: Diffraction and Interference of light waves
Type: Objective
Difficulty: Not specified
Question 480 of 947
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