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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