Given below are two statements:Statement I: I | vedclass

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(C) The angular fringe width $	heta$ in a Young's double slit experiment is given by the formula $	heta = \frac{\lambda}{d}$, where $\lambda$ is the

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Statement $I$ is false but Statement $II$ is true

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(C) The angular fringe width $	heta$ in a Young's double slit experiment is given by the formula $	heta = \frac{\lambda}{d}$, where $\lambda$ is the wavelength of the light used and $d$ is the distance between the two slits.Statement $I$: The angular fringe width depends only on the wavelength $\lambda$ and the slit separation $d$. It is independent of the distance $D$ between the screen and the slits. Therefore, moving the screen away does not change the angular separation. Thus, Statement $I$ is false.Statement $II$: Since $	heta = \frac{\lambda}{d}$, the angular fringe width is directly proportional to the wavelength $\lambda$. If the source is replaced by one with a higher wavelength, $	heta$ will increase. Thus, Statement $II$ is true.Conclusion: Statement $I$ is false and Statement $II$ is true.

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Two wavelengths $\lambda_1 = 450 \ nm$ and $\lambda_2 = 650 \ nm$ are used in Young's double slit experiment. The minimum order of fringe produced by $\lambda_2$ which overlaps with a fringe produced by $\lambda_1$ is $n$. The value of $n$ is . . . . . . .

If the Young's double slit experiment is performed with white light,then which of the following is not true?

The distance between two coherent sources is $0.1 \, mm$. The fringe-width on a screen $1.2 \, m$ away from the source is $6.0 \, mm$. The wavelength of light used is ......... $\mathring{A}$.

Describe Young's double slit experiment.

In a double-slit experiment,the angular width of the fringes is $0.20^o$ for sodium light $(\lambda = 5890 \ \mathring{A})$. In order to increase the angular width of the fringes by $10\%$,the necessary change in the wavelength is:

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