A Young's double slit experiment uses a ...

A Young's double slit experiment uses a monochromatic source. The shape of the interference fringes formed on a screen is

Straight line

Parabola

Hyperbola

Circle

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In Young's double-slit experiment, the slit are 0.5 mm apart and the interference is observed on a screen at a distance of 100 cm from the slits, It is found that the ninth bright fringe is at a distance of 7.5 mm from the second dark fringe from the center of the fringe pattern. The wavelength of the light used is

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In a young's double slit experiment, slits are illuminated by a monochromatic source of wavelength 6000Å and fringes are obtained. If screen is moved by a distance of 5 cm towards slits, change in fringe width is 3 xx 10^(-5) m . Then separation between the slits will be :

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