Questions
A screen is placed 2 m away of a single narrow slit. Calculate the slit width if the first minima lies 5 mm of either side of central maxima if the incident plane wave has a wavelength of 5000
detailed solution
Correct option is A
for the first minima sinθ=λa=xD so a=λ Dxhere D=2m and x = 5 mm λ=5×10-7mthen a=a=5×10-7×25×10-3= 2×10-4mTalk to our academic expert!
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A screen is placed 50cm from a single slit, which is illuminated with 6000 light. If distance between the first and third minima in the diffraction pattern is 3mm, the width of the slit is
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