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Manipal MET2017PhysicsWave Optics

First diffraction minima due to a single slit of width 10⁻⁴ ~cm is at =30^ . Then wavelength of the light used is

Options

  1. A4000 Å
  2. B5000 Å
  3. C6000 Å
  4. D6250 Å

Correct answer

B. 5000 Å

Step-by-step solution

a =1 =a =10⁻⁴ 1 2 = 10 10⁻⁵ 2 =5 10⁻⁵ ~cm =5000 Å

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