Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question
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Question

For constructive interference to occur in a Young's double-slit setup, the path difference (dsinθ) must be an integral multiple of what quantity?
Options
A Half the wavelength (λ/2)
B The wavelength (λ)
Correct Answer
C The slit separation (d)
D The screen distance (x)
Correct Answer

Option B is the correct answer.

Detailed Explanation

The conditions for bright fringes (constructive interference) are given by '0, λ, 2λ, 3λ ... ... ... ... ..., nλ'. This means the path difference must be an integral multiple of the wavelength (λ).

Hint

Check the section describing 'Constructive interference' on page 3.

Question Info

Course: PHY 104
Topic: Diffraction and Interference of light waves
Type: Objective
Difficulty: Not specified
Question 497 of 947
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