IN R-F AND R-Cl R-Cl HAVE GREATER DIPOLE MOMENT according to TOGETHER WITH, is this is right if so then why.

florine is more electronegative than chlorine...

dipole moment depends upon distance bw ions ,so in R-F ,distance bw R & F is less due to

high electronegativity of florine and so its dipole moment is lesser than R-Cl..