After Light from a Source Passes Through Two Slits,a First

question 64

Multiple Choice

After light from a source passes through two slits,a first order bright spot is seen on the wall at point P.Which distance is equal to the wavelength of the light?

• A) the extra distance one beam must travel
• B) the distance between beams as they leave the slit
• C) the distance of point P from the central point of the interference pattern
• D) the distance between slits

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