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STANDARDPhysics-Wave Optics

STANDARD Physics Diffraction MCQ Question

Type: MCQ-numerical-Medium-Class 12

A parallel beam of light of wavelength 6000 Å gets diffracted by a single slit of width 0.3 mm. The angular position of the first minima of diffracted light is

A

2 × 10⁻³ rad

B

3 × 10⁻³ rad

C

1.8 × 10⁻³ rad

D

6 × 10⁻³ rad

Correct Answer

Option A

Detailed Explanation

For the first minima, a sin θ = λ. Substituting the given values, sin θ = 2 × 10⁻³, hence θ = 2 × 10⁻³ rad.

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