Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question
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Question

What condition is primarily required for a wave to undergo significant diffraction?
Options
A The wave must have a very high frequency.
B The wave must be monochromatic.
C The dimensions of the opening or barrier must be similar to the wavelength of the wave.
Correct Answer
D The wave must travel through a vacuum.
Correct Answer

Option C is the correct answer.

Detailed Explanation

According to the text, 'If a wave encounters a barrier that has an opening of dimensions similar to the wavelength, the portion of the wave that passes through the opening will spread out (diffract) into the region beyond the barrier.' This directly states the primary condition for significant diffraction.

Hint

Refer to the first paragraph under the 'DIFFRACTION' heading.

Question Info

Course: PHY 104
Topic: Diffraction and Interference of light waves
Type: Objective
Difficulty: Not specified
Question 491 of 947
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