Monochromatic green light of wavelength 5 × 10-7 m illuminates a pair of slits 1 mm apart. The separation of bright lines on the interference pattern formed on a screen 2 m away is:

Question

Monochromatic green light of wavelength 5 × 10-7 m illuminates a pair of slits 1 mm apart. The separation of bright lines on the interference pattern formed on a screen 2 m away is: (A) 0.25 mm (B) 0.1 mm (C) 1 mm (D) 0.01 mm

Tardigrade Admin · Accepted Answer

β=(λ D / d )=(5 × 10-7 × 2/10-3)=10-3 m β=1 mm

Q. Monochromatic green light of wavelength $5 \times 1 0^{- 7} m$ illuminates a pair of slits $1 mm$ apart. The separation of bright lines on the interference pattern formed on a screen $2 m$ away is:

$0.25 mm$

$0.1 mm$

$1 mm$

$0.01 mm$

$β = \frac{λ D}{d} = \frac{5 \times 1 0 ^{- 7} \times 2}{1 0 ^{- 3}} = 1 0^{- 3} m$
$β = 1 mm$

Q. Monochromatic green light of wavelength 5×10−7m illuminates a pair of slits 1mm apart. The separation of bright lines on the interference pattern formed on a screen 2m away is:

0.25mm

0.1mm

1mm

0.01mm