λ=6000x10^-10 m and width : 0.6 x 10^-4 m. Find highest order of minima on both sides of central maxima
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It has given that, wavelength of monochromatic light, λ = 6000 A° , width of slits , d = 0.6 × 10¯⁴ m.
We have to find the highest order of minima on both sides of central Maxima.
solution : we have to find height of
highest order of minima on both side central maxima.
we know for minima , dsinΦ = nλ
⇒sinΦ = nλ/d ≤ 1 [ as sinΦ must be less than or equal to 1 ]
⇒n ≤ d/λ = (0.6 × 10¯⁴)/(6000 × 10¯¹⁰) = 100
so on one side of central Maxima, there are 100 minima
Therefore no of Maxima on both sides of central Maxima = 100 + 100 = 200
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