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Davisson-Germer Experiment

In diffractio...

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In diffraction (lamda)D/2a position of bright fringe is possible or not?

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Q. In Fraunhofer diffraction, how is the angular width of the central bright fringe affected when slit separation is increased?

Q. Which combination of wavelength and lines/meter will cause the first bright fringe to be closest to straight ahead on a screen in front of a diffraction grating?

Q. What will be the effect on the width of the central bright fringe in the diffraction pattern of a single slit if:

(1)

Monochromatic light of smaller wavelength is used.

(2)

Slit is made narrower

Q. In YDSE distance between slits and screen is

1.5 m

. When light of wavelength

500 nm

2^{n d}

bright fringe is obtained on screen at a distance of

10 mm

from central bright fringe. What will be shift in position of

2^{n d}

bright fringe, if light of wavelength

550 nm

Q. Assertion :In YDSE number of bright fringe or dark fringe can not be unlimited Reason: In YDSE path difference between the superposing waves can not be more than the distance between the slits

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