NEET2015PhysicsWave OpticsActual
At the first minimum adjacent to the central maximum of a single-slit diffraction pattern, the phase difference between the Huygen's wavelet from the edge of the slit and the wavelet from the midpoint of the slit is:
Options
- Aπ 2 radian
- Bπ radian
- Cπ 8 radian
- Dπ 4 radian
Correct answer
B. π radian
Step-by-step solution
For first minima A P - B P = λ A P - M P = λ 2 So phase difference = 2 π λ × λ 2 = π