Consider the diffraction pattern for a small pinhole. As the size of the hole is increasedA. the size decreaseB. the intensity increaseC. the size increaseD. the intensity decrease

Consider the diffraction pattern for a small pinhole. As the size of t

1.	Consider the diffraction pattern for a small pinhole. As the size of the hole is increasedA. the size decreaseB. the intensity increaseC. the size increaseD. the intensity decrease
Answer» Correct Answer - A::B (a,b) (a) When a decrease w increases. So, size decreases. (b) Now, light energy is distributed over a small are and intensity `prop(1)/("area")` as area is decreasing so intensity increases.

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Angular width of central maxima in the Fraunhofer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength `6000Å`. When the slit is illuminated by light of another wavelength, the angular width decreases by 30%. The wavelength of this light will beA. `3500 Å`B. `4200 Å`C. `4700 Å`D. `6000 Å`
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Consider the diffraction pattern for a small pinhole. As the size of the hole is increasedA. the size decreaseB. the intensity increaseC. the size increaseD. the intensity decrease

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