Home
Class 12
PHYSICS
Young's experiment is performed with lig...

Young's experiment is performed with light of wavelength `6000Å` where in 16 frignes occupy a certain region on the screen. If 24 fringes occupy the same region with another light of wavelength `lamda` then `lamda` is

A

`6000Å`

B

`4500Å`

C

`5000Å`

D

`4000Å`

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • WAVE OPTICS

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR QUESTIONS|3 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|37 Videos

Similar Questions

Explore conceptually related problems

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

In Young's double slit experiment using monochromatic light of wavelength lamda , the intensity of light at a point on the screen where path difference is lamda is K units. What is the intensity of light at a point where path difference is (lamda)/3 ?

Knowledge Check

  • In Young's double slit experiment with slit separation d, a monochromatic light of wavelength lamda is used. The angular separation of the fringes is

    A
    a. `d/(lamda)`
    B
    b. `(lamda)/d`
    C
    c. `(2lamda)/d`
    D
    d. `(lamda)/(2d)`

  • In a young 's double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen, when light of wavelenght 600 nm is used. If the wavelenght of light is changed to 400 nm. Number of fringes observed in the same segment of the screen is given by

    A
    12
    B
    18
    C
    24
    D
    30

    • Similar Questions

    Explore conceptually related problems

    In Young's double slit experiment, the distance of the screen from the two slits in 1m. When a light of wavelength 600nm is allowed to fall on the slits width of the fringes obtained on the screen is 2mm. Calculate the width of the fringe if the wavelength of the incident light is 400nm. Calculate band width in each case if the arrangement is immersed in water of refractive index 1.33.

    A double slilt experiment is performed with sodium (yellow) light of wavelength 589.3 nm and the interference pattern is observed on a screen 100 cm away. The tenth bright fringe has its centre at a distance of 12 mm from the central maximum. Find the separation betwen the slits.

    In a Young's double slit experiment, the separation between the slits = 2.0 mm, the wavelength of the light = 600 nm and the distance of the screen from the slits = 2.0 m. If the intensity at the centre of the central maximum is 0.20 W m^-2 , what will be the intensity at a point 0.5 cm away from this centre along the width of the fringes ?

    In a Young's double slit interference experiment the fringe pattern is observed on a screen placed at a distance D from the slits. The slits are separated by a distance d and are illuminated by monochromatic light of wavelength lamda . Find the distance from the central point where the intensity falls to (a) half the maximum,

    In Young's experiment, the upper slit is covered by a thin glass plate of refractive index 1.4 while the lower slit is covered another glass plate having the same thickness as the first one but having refractive index Interference pattern is observed using light of wavelength 5400A. It is observed that the point P on the screen where the central maximum (n=0) fell before the glass were inserted now has 3/4 th original intensity. It is further observed that what used to be the fifth maximum earlier, lies below the point P while the sixth minimum lies above P. Calculate the thickness of the glass plate.

    A beam of light consisting of two wavelengths, 6500 Å and 5200 Å is used to obtain interference fringes in a Young's double slit experiment (1 Å = 10^(-10) m). The distance between the slits is 2.0 mm and the distance between the plane of the slits and the screen in 120 cm. (a) Find the distance of the third bright fringes on the screen from the central maximum for the wavelength 6500 Å (b) What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide ?

    Home
    Profile