If fringe width is 0.4 ,mm, the distance betw | vedclass

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

Question

(A) The fringe width is given by $\beta = \frac{\lambda D}{d} = 0.4 \,mm$.The position of the $n_{1}$-th bright fringe from the central maximum is giv

Vedclass · Accepted Answer

$1$

Vedclass · Answer

(A) The fringe width is given by $\beta = \frac{\lambda D}{d} = 0.4 \,mm$.The position of the $n_{1}$-th bright fringe from the central maximum is given by $x_{n_1} = n_1 \beta$.For the fifth bright fringe $(n_1 = 5)$:$x_5 = 5 \beta = 5 	imes 0.4 \,mm = 2.0 \,mm$.The position of the $n_2$-th dark fringe from the central maximum is given by $x_{n_2} = (n_2 - 0.5) \beta$.For the third dark fringe $(n_2 = 3)$:$x_3 = (3 - 0.5) \beta = 2.5 \beta = 2.5 	imes 0.4 \,mm = 1.0 \,mm$.The distance between the fifth bright and third dark band on the same side is:$\Delta x = x_5 - x_3 = 2.0 \,mm - 1.0 \,mm = 1.0 \,mm$.

If fringe width is $0.4 \,mm$, the distance between the fifth bright and third dark band on the same side is: (in $\,mm$)

Similar Questions

The path difference between two interfering light waves meeting at a point on the screen is $\left(\frac{57}{2}\right) \lambda$. The band obtained at that point is

In Young's double-slit experiment,if a metal plate of thickness $t$ is placed in the path of one of the rays,then:

In a double slit experiment,when the distance between slits is increased $10$ times,while their distance from the screen is halved,then the fringe width

In $YDSE$,the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width is

In a Young's double-slit experiment,the fringe width is $0.8 \, mm$ when light of wavelength $6000 \, \mathring{A}$ is used,and the screen is at a distance of $2.5 \, m$. If the experiment is performed in a liquid with a refractive index of $1.6$,the new fringe width will be.....$mm$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module