In a Lloyds's mirror experiment as narraow slit S iransmitting a light of wavelength lambda is placed 3 mm above a small plane mirror ( as shown). The light coming directly from the the slit and that coming after the reflection interfere on a screen placed at a distance of 90 cm from the slit. Length of mirror is 2 mm and the middle point of mirroris 2 mm from point P. If fringe width is 0.1 mm then what is the wavelength of light used ?

In a Lloyds's mirror experiment as narraow slit S iransmitting a light

1.	In a Lloyds's mirror experiment as narraow slit S iransmitting a light of wavelength lambda is placed 3 mm above a small plane mirror ( as shown). The light coming directly from the the slit and that coming after the reflection interfere on a screen placed at a distance of 90 cm from the slit. Length of mirror is 2 mm and the middle point of mirroris 2 mm from point P. If fringe width is 0.1 mm then what is the wavelength of light used ?
Answer» `3.33xx10^(-7)m` `6.67xx10^(-7)m` `1.0xx10^(-7)m` `4xx10s` ANSWER :B

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