Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question
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Question

What does the grating equation (d sin θn = nλ) primarily describe in the context of diffraction gratings?
Options
A The conditions for destructive interference.
B The conditions for the formation of bright fringes (maxima).
Correct Answer
C The relationship between slit width and wavelength.
D The intensity of the diffracted light.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 6 states, 'The condition for the formation of these bright fringes is the same as that derived for Young's experiment. Therefore, we can write the grating equation as d sin θn = nλ;'. This equation defines the positions of bright fringes.

Hint

The text explicitly links the grating equation to the 'formation of these bright fringes'.

Question Info

Course: PHY 104
Topic: Diffraction and Interference of light waves
Type: Objective
Difficulty: Not specified
Question 500 of 947
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