In a Young's double slit experiment, the fringe width is found to be text2 mm , when light of wavelength 6000 Å is used. Find the final fringe width if the whole apparatus is immersed in water having refractive index as text1 text.33 .

Question

In a Young's double slit experiment, the fringe width is found to be text2 mm , when light of wavelength 6000 Å is used. Find the final fringe width if the whole apparatus is immersed in water having refractive index as text1 text.33 . (A) 0.5 mm (B) 1 mm (C) 1.5 mm (D) 2 mm

Tardigrade Admin · Accepted Answer

Fringe width β =2 mm=2× 10- 3 m λ =6000 â« μ =1.33 β â²=? β â²=(β /μ ) =(2/1.33) = 1.5 mm

Q. In a Young's double slit experiment, the fringe width is found to be $2 mm$ , when light of wavelength $6000 Å$ is used. Find the final fringe width if the whole apparatus is immersed in water having refractive index as $1 .33$ .

$0.5 mm$

$1 mm$

$1.5 mm$

$2 mm$

Fringe width $β = 2 mm = 2 \times 1 0^{- 3} m$
$λ = 6000 Å$
$μ = 1.33$
$β^{'} = ?$
$β^{'} = \frac{β}{μ}$
$= \frac{2}{1.33}$
$= 1.5 mm$

Q. In a Young's double slit experiment, the fringe width is found to be 2 mm , when light of wavelength 6000Å is used. Find the final fringe width if the whole apparatus is immersed in water having refractive index as 1.33 .

0.5mm

1mm

1.5mm

2mm