PhysicsMedium84×since 2003Q8406The diffraction pattern of a light of wavelength 400 nm400 \mathrm{~nm}400 nm diffracting from a slit of width 0.2 mm0.2 \mathrm{~mm}0.2 mm is focused on the focal plane of a convex lens of focal length 100 cm100 \mathrm{~cm}100 cm. The width of the 1st 1^{\text {st }}1st secondary maxima will be :A2 mmB0.2 mmC0.02 mmD2 cmCheck answerSkip