In a Young\'s double slit experiment, green light is incidenton the two slits. T

Question

In a Young's double slit experiment, green light is incidenton the two slits. The interference pattern is observed on a screen.Which one of the following changes would cause the fringes to bemore closely spaced?

a. Use red light instead of greenlight.
b. Reduce the slit separationdistance.
c. Move the screen farther away from theslits.
d. Use blue light instead of greenlight.
e. Move the light source farther away from the slits. In a Young's double slit experiment, green light is incidenton the two slits. The interference pattern is observed on a screen.Which one of the following changes would cause the fringes to bemore closely spaced? Use red light instead of greenlight. Reduce the slit separationdistance. Move the screen farther away from theslits. Use blue light instead of greenlight. Move the light source farther away from the slits.

Explanation / Answer

fringe width = D / d where = wavelength            D = distance of the scrren from the slits            d = separation between the slits So, answers is use blue light instead of green light Since wavelength of blue is less than green

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