A single slit forms a diffraction pattern,with the first minimum at an angle of 40.0° from central maximum,using monochromatic light of 490-nm wavelength.What is the width of the slit?
A) 762 nm
B) 731 nm
C) 700 nm
D) 668 nm
E) 637 nm

Question

Quizplus · Accepted Answer

The correct answer is A.The width of the slit can be calculated using the formula:```w = λ / sin(θ)```where:* w is the width of the slit* λ is the wavelength of light* θ is the angle of the first minimumPlugging in the given values, we get:```w = 490 nm / sin(40.0°) = 762 nm```

A Single Slit Forms a Diffraction Pattern,with the First Minimum