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AP EAMCET20228 Jul 2022Morning ShiftPhysicsWave OpticsActual

A monochromatic light is incident on a single slit of width 0.014 ~mm . The angular position of the second bright line observed is 2.81^ . Then the wavelength of the incident light is [ (2.81^ )=0.049072 ]

Options

  1. A4026 Å
  2. B5890 Å
  3. C6040 Å
  4. D2748 Å

Correct answer

D. 2748 Å

Step-by-step solution

We have for n^ th maxima a =(2 n+1) 2 aligned & = 2 a (2 n +1) & = 2 0.014 10⁻³ (2.81) (2 2+1) & =2748 Å aligned

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