Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question

Question

Which of the following equations represents the grating equation for bright fringes?
Options
A d sin θ<sub>n</sub> = nλ/2
B d cos θ<sub>n</sub> = nλ
C d sin θ<sub>n</sub> = nλ
Correct Answer
D d tan θ<sub>n</sub> = nλ
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 6 states: 'Therefore, we can write the grating equation as d sin θn = nλ; n = 1, 2, 3 ... ... ... ...'

Hint

The grating equation is explicitly stated in the 'Diffraction Grating' section.

Question Info