Fresnel diffraction is produced due to light | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In Fresnel diffraction,the source of light and the screen are at finite distances from the obstacle. No lenses are required to render light rays p

Vedclass · Accepted Answer

the number of half-period zones that superpose at the point

Vedclass · Answer

(B) In Fresnel diffraction,the source of light and the screen are at finite distances from the obstacle. No lenses are required to render light rays parallel. The diffraction pattern observed on the screen is formed by the superposition of secondary wavelets originating from different parts of the wavefront. The resultant amplitude and intensity at any point on the screen depend on the number of half-period zones that contribute to the superposition at that specific point. If the number of zones is odd,the point may be bright,and if even,it may be dark,depending on the phase interference.

Fresnel diffraction is produced due to light rays falling on a small obstacle. The intensity of light at a point on a screen beyond an obstacle depends on

Similar Questions

In the following compounds,the order of acidity is:
$(I)$ Phenol
$(II)$ $p$-Cresol ($4$-methylphenol)
$(III)$ $m$-Nitrophenol
$(IV)$ $p$-Nitrophenol

Which of the following is included in biochemistry?

In an entrance test,there are multiple-choice questions. There are four possible answers to each question,of which one is correct. The probability that a student knows the answer to a question is $90\%$. If he gets the correct answer to a question,then the probability that he was guessing is:

$A$ given charge is situated at a certain distance from an electric dipole in the end-on position experiences a force $F$. If the distance of the charge is doubled,the force acting on the charge will be

$Assertion:$ The total translational kinetic energy of all the molecules of a given mass of an ideal gas is $1.5$ times the product of its pressure and its volume.
$Reason:$ The molecules of a gas collide with each other and the velocities of the molecules change due to the collision.

Vedclass Test Series

Exam Paper Generator

Online Exam Module