Home
Class 12
PHYSICS
(a) In Young.s double slit experiment us...

(a) In Young.s double slit experiment using monochromatic light of wavelength `600` nm, interference pattern was obtained on a scren kept `1.5` m away from the plane of the two slits. Calculate the distance between the two slits. Fringe `"separation" // "fringe"` width was found to be `1.0` mm.
(b) When a fish is observed underwater at depth of `3` m appears to be at a depth of `2` m. What is the refractive index of water ?

Text Solution

Verified by Experts

Given : `lamda=600nm`
`=600xx10^(-9)m`
D=1.5 m
d=?
`beta=1mm`
`=0.001m or 1xx10^(-3)m`
`beta=(Deltalamda)/(d)`
`1xx10^(-3)=(1.5xx600xx10^(-9))/(d)`
`d=9xx10^(-4)m`
Promotional Banner

Similar Questions

Explore conceptually related problems

In Young.s double slit experiment using monochromatic light of wavelength 600 nm, 5th bright fringe is at a distance of 0.48 mm from the centre of the pattern. If the screen is at a distance of 80 cm from the plane of the two slits, calculate : Distance between the two slits.

In Young’s double slit experiment, using light of wavelength 600 nm, 10^(th) bright fringe is obtained on a screen, 3mm from the centre of the pattern. If the screen is 120 cm away from the slits, calculate: (i) Distance between the two slits, (ii) Fringe width, i.e. fringe separation.

Find the angular fringe width in Young's double slit experiment using a monochromatic light of wavelength 500 nm when the slits are separated by 2.5 mm.

In double slit experiment using light of wavelength 600 nm , the angular width of a fringe formed on a distant screen is 0.1^(@) . What is the spacing between the two slits ?

In double slit experiment using light of wavelength 600 nm , the angular width of a fringe formed on a distant screen is 0.1^(@) . What is the spacing between the two slits ?

In Young.s double slit experiment using monochromatic light of wavelength 600 nm, 5th bright fringe is at a distance of 0.48 mm from the centre of the pattern. If the screen is at a distance of 80 cm from the plane of the two slits, calculate : Fringe width, i.e., fringe separation.

In a Young's double slit experiment, (slit distance d) monochromatic light of wavelength lambda is used and the fringe pattern observed at a distance D from the slits. The angular position of the bright fringes are

In Young.s double slit experiment, blue-green light of wavelength 500nm is used. The slits are 1.20mm apart, and the viewing screen is 5.40 m away from the slits. What is the fringe width.

Young’s double slit experiment is performed with light of wavelength 550 nm . The separation between the slits is 1.10 mm and screen is placed at distance of 1 m . What is the distance between the consecutive bright or dark fringes

In Young's double slit experiment with a mono - chromatic light of wavelength 4000 A^(@) , the fringe width is found to be 0.4 mm. When the slits are now illuminated with a light of wavelength 5000A^(@) the fringe width will the