Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter 0.1 μ m. If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such that :

Question

Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter 0.1 μ m. If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such that : (A) its size decreases, and intensity decreases (B) its size increases, and intensity increases (C) its size increases, but intensity decreases (D) its size decreases, but intensity increases

Tardigrade Admin · Accepted Answer

sin θ=(m λ/a) when a increases, θ decreases, width decreases width decreases so intensity will increases

Q. Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter $0.1 μ m$ . If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such that :

its size decreases, and intensity decreases

its size increases, and intensity increases

its size increases, but intensity decreases

its size decreases, but intensity increases

$sin θ = \frac{mλ}{a}$
when a increases, $θ$ decreases,
width decreases
width decreases so intensity will increases

Q. Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter 0.1μm. If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such that :