Light of wavelength illuminates two slits of separation

PHYSICS · Subjective · A Level · Physics · Waves · Waves

Problem

Light of wavelength

600\,\text{nm}

illuminates two slits of separation

d=0.10\,\text{mm}

. Each slit has width

a=0.30\,\text{mm}

. Determine the order number

m

of the first interference maximum that is missing from the observed pattern.