A slit of width ' a ' is illuminated normally by white light. For red light (\lambda=6500 Å), the first minima is obtained at \theta=30^{\circ}. Then the value of ' a ' is

AP EAMCET 23 May 2023 Shift 1 Paper

Question : 103 of 160

Marks: +1, -0

A slit of width ' a ' is illuminated normally by white light. For red light (λ=6500Å), the first minima is obtained at θ=30∘. Then the value of ' a ' is

3250Å
6.5×10−4‌mm
1.24µm
2.6×10−4‌mm

Validate

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