In single slit experiment, the width of the slit is reduced. Then, the linear width of the principal maxima

Question

In single slit experiment, the width of the slit is reduced. Then, the linear width of the principal maxima (A) increases but becomes less bright (B) decreases but becomes more bright (C) increases but becomes more bright (D) decreases but becomes less bright

Tardigrade Admin · Accepted Answer

If width of slit is reduced in a single slit diffraction.
Width of central maxima

β = \frac{2 λ D}{a}

will increase but intensity of central maxima will decrease less number of waves will superpose at the centre.

Q. In single slit experiment, the width of the slit is reduced. Then, the linear width of the principal maxima

increases but becomes less bright

decreases but becomes more bright

increases but becomes more bright

decreases but becomes less bright

If width of slit is reduced in a single slit diffraction. Width of central maxima β=a2λD​ will increase but intensity of central maxima will decrease less number of waves will superpose at the centre.

If width of slit is reduced in a single slit diffraction.
Width of central maxima $β = \frac{2 λ D}{a}$ will increase but intensity of central maxima will decrease less number of waves will superpose at the centre.