What is the maximum number of bright fringes observed in a double-slit experimen
Practice Questions
Q1
What is the maximum number of bright fringes observed in a double-slit experiment if the wavelength of light is 500 nm and the distance between the slits is 0.1 mm? (2020)
5
10
20
15
Questions & Step-by-Step Solutions
What is the maximum number of bright fringes observed in a double-slit experiment if the wavelength of light is 500 nm and the distance between the slits is 0.1 mm? (2020)
Step 1: Understand the problem. We need to find the maximum number of bright fringes in a double-slit experiment.
Step 2: Identify the given values. The wavelength of light (λ) is 500 nm and the distance between the slits (d) is 0.1 mm.
Step 3: Convert the units to be the same. Convert 0.1 mm to nanometers: 0.1 mm = 100,000 nm.
Step 4: Use the formula for the maximum number of bright fringes: n = d / λ.
Step 5: Substitute the values into the formula: n = 100,000 nm / 500 nm.
Step 6: Calculate the result: n = 200.
Step 7: Interpret the result. This means there are 200 bright fringes in total, with 100 on each side of the central maximum.
