find the equation of the straight line which
passes through the point of intersertion of
the lines 4x+3y+19=0 and 12x−5y+3=0
and has a y_intercept of 2
Q) A light falls on two slits 0.15 mm apart.An interference pattern
is produced on a screen 60 cm from the slits, if
the distance between the second and the fifth
bright bands (frings) is 0.7 cm. Calculate the
avelength of the used light.
solution:
Δy_(n=2→n=5) =0.7⇒Δy=0.7/3=0.233×10^(−2) m
Δy=((sλ)/d) ⇒λ=((dΔy)/s)=((0.15×10^(−3) ×0.233×10^(−2) )/(60×10^(−2) ))
=5.83×10^(−7) =583 nm