Electromagnetic waves of wavelength λ =500nm are incident on a YDSE apparatus. Both slits are of same width. Here d=3mm,D=2m. Intensity at central maxima is 1Wm- 2, what is the intensity (in Wm- 2 ) at a point 1mm above maxima of order 1 ?

Question

Electromagnetic waves of wavelength λ =500nm are incident on a YDSE apparatus. Both slits are of same width. Here d=3mm,D=2m. Intensity at central maxima is 1Wm- 2, what is the intensity (in Wm- 2 ) at a point 1mm above maxima of order 1 ? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Fringe width, β =(D λ /d)=(1/3)mm At a point 1mm above maxima of order -1 =4th order maxima will be formed ∴ Intensity at this point =1Wm- 2

Q. Electromagnetic waves of wavelength $λ = 500 nm$ are incident on a $Y D SE$ apparatus. Both slits are of same width. Here $d = 3 mm, D = 2 m .$ Intensity at central maxima is $1 W m^{- 2},$ what is the intensity (in $W m^{- 2}$ ) at a point $1 mm$ above maxima of order $1$ ?

Fringe width,
$β = \frac{D λ}{d} = \frac{1}{3} mm$
At a point $1 mm$ above maxima of order $- 1$
$= 4 t h$ order maxima will be formed
$∴$ Intensity at this point $= 1 W m^{- 2}$

Q. Electromagnetic waves of wavelength λ=500nm are incident on a YDSE apparatus. Both slits are of same width. Here d=3mm,D=2m. Intensity at central maxima is 1Wm−2, what is the intensity (in Wm−2 ) at a point 1mm above maxima of order 1 ?

Fringe width, β=dDλ​=31​mm At a point 1mm above maxima of order −1 =4th order maxima will be formed ∴ Intensity at this point =1Wm−2

Q. Electromagnetic waves of wavelength $λ = 500 nm$ are incident on a $Y D SE$ apparatus. Both slits are of same width. Here $d = 3 mm, D = 2 m .$ Intensity at central maxima is $1 W m^{- 2},$ what is the intensity (in $W m^{- 2}$ ) at a point $1 mm$ above maxima of order $1$ ?

Fringe width,
$β = \frac{D λ}{d} = \frac{1}{3} mm$
At a point $1 mm$ above maxima of order $- 1$
$= 4 t h$ order maxima will be formed
$∴$ Intensity at this point $= 1 W m^{- 2}$