Bichromatic light is used in YDSE with wavelengths and

PHYSICS · Numerical · A Level · Physics · Waves · Waves

Problem

Bichromatic light is used in YDSE with wavelengths

\lambda_1=400\,\mathrm{nm}

and

\lambda_2=700\,\mathrm{nm}

. Find the minimum order of the bright fringe of

\lambda_1

which overlaps with a bright fringe of

\lambda_2