In a Young's double-slit experiment,interfere | vedclass

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

Question

(B) The fringe width $\beta$ in a double-slit experiment is given by $\beta = \frac{\lambda D}{d}$.According to the de Broglie hypothesis,the waveleng

Vedclass · Accepted Answer

Decrease the electron gun voltage.

Vedclass · Answer

(B) The fringe width $\beta$ in a double-slit experiment is given by $\beta = \frac{\lambda D}{d}$.According to the de Broglie hypothesis,the wavelength of an electron accelerated through a potential $V$ is $\lambda = \frac{h}{p} = \frac{h}{\sqrt{2mqV}}$.Substituting this into the fringe width formula,we get $\beta = \frac{hD}{d\sqrt{2mqV}}$.From this expression,it is clear that $\beta \propto \frac{1}{\sqrt{V}}$.Therefore,to increase the fringe width $\beta$,the accelerating voltage $V$ must be decreased.

In a Young's double-slit experiment,interference is obtained using electron waves. The electrons are produced by an electron gun. To increase the fringe width,one must:

Similar Questions

In Young's double-slit experiment,which of the following phenomena occur?

In Young's experiment, the intensity ratio of the maxima and minima in an interference pattern produced by two coherent sources is $36 : 1$. The ratio of the amplitudes of the two individual sources will be

In a Young's double slit experiment,$16$ fringes are observed in a certain segment of the screen when light of wavelength $700 \,nm$ is used. If the wavelength of light is changed to $400 \,nm$,the number of fringes observed in the same segment of the screen would be........

The maximum intensity of fringes in Young's experiment is $I$. If one of the slits is closed,then the intensity at that place becomes $I_o$. Which of the following relations is true?

Assertion : No interference pattern is detected when two coherent sources are infinitely close to each other.
Reason : The fringe width is inversely proportional to the distance between the two slits.

Vedclass Test Series

Exam Paper Generator

Online Exam Module