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[" Q.24Inafraunhofer's diffinction by as...

[" Q.24Inafraunhofer's diffinction by aslitifslitwidthisa,wave length "," focal length of lens isf,linearwidth "],[" of centralmaxima is: "],[[" (1) "(pi)/(a)," (2) "(f_(a))/(lambda)," (3) "(2 pi)/(a)," (4) "(A)/(2a)]]

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In a fraunhofer's diffraction by a slit, if slit width is a, wave length lamda focal length of lens is f, linear width of central maxima is-

In a fraunhofer's diffraction by a slit, if slit width is a, wave length lamda focal length of lens is f, linear width of central maxima is-

In a fraunhofer's diffraction by a slit, if slit width is a, wave length lamda focal length of lens is f, linear width of central maxima is-

The focal length of the lens is ….

Define focal length of a lens

The focal length of a lens depends on

The focal length of a lens depends on