Questions
Light of wavelength 6328 is incident normally on a slit of width 0.2 mm. Calculate the angular width of central maximum on a screen distance 9 m.
detailed solution
Correct option is C
Given λ=6.328×10−7m, a=0.2×10−3m Angular Fringe Width, w0=2λa=2×6.328×10−72×10−4radian ⇒ w0 =6.328×10−3×1803.14=0.36 radianTalk to our academic expert!
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In a single slit diffraction experiment first minimum for red light (660 nm) coincides with first maximum of some other wavelength '. The value of ' is
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