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What is the condition for the first minimum in single-slit diffraction?
What is the condition for the first minimum in single-slit diffraction?
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Practice Questions
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Q1
What is the condition for the first minimum in single-slit diffraction?
a = λ
a = 2λ
a = λ/2
a = 3λ
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The first minimum occurs at a = λ, where 'a' is the slit width and 'λ' is the wavelength.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the condition for the first minimum in single-slit diffraction?
Solution:
The first minimum occurs at a = λ, where 'a' is the slit width and 'λ' is the wavelength.
Steps: 6
Show Steps
Step 1: Understand that we are talking about light passing through a single slit.
Step 2: Know that when light goes through a slit, it creates a pattern of light and dark areas on a screen.
Step 3: The dark areas are called 'minima' and the first dark area is the first minimum.
Step 4: The condition for the first minimum is based on the relationship between the slit width and the wavelength of the light.
Step 5: The formula for the first minimum is when the slit width 'a' is equal to the wavelength 'λ' of the light.
Step 6: So, when 'a' equals 'λ', we find the position of the first minimum in the diffraction pattern.
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