Question: Which of the following equations represents the condition for the first minimum in a single-slit diffraction pattern?

Options:

1. a sin(θ) = λ
2. a sin(θ) = 2λ
3. a sin(θ) = 3λ
4. a sin(θ) = 0

Correct Answer: a sin(θ) = λ

Solution:

The condition for the first minimum in a single-slit diffraction pattern is given by a sin(θ) = λ, where \'a\' is the slit width and \'λ\' is the wavelength.