Ts Eamcet
Wave Optics
TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ+1 / -02020
On using red light $(\lambda=6600 \mathop {\rm{A}}\limits^{\rm{o}})$ in Young's double slit experiment, 60 fringes are observed in the field of view. If violet light ( $\lambda=4400 \mathop {\rm{A}}\limits^{\rm{o}}$ ) is used, the number of fringes observed will be