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

question 85

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