The wavelength of the light used in Young's double slit experiment is λ. The intensity at a point on the screen is I, where the path difference is . IF I0 denotes the maximum intensity, then the ratio of I and I0 is
0.866
0.5
0.707
0.75
What is the minimum thickness of a thin film required for constructive interference in the reflected light from it ?Given, the refractive index of the film = 1.5, wavelength of the light incident on the film = 600 nm.
100 nm
300 nm
50 nm
200 nm
Critical angle for certain medium is sin-1 (0.6). The polarizing angle of that medium is
tan-1 (1.5)
sin-1 (0.8)
tan-1 (1.6667)
tan-1 (0.6667)
Two monochromatic light waves of amplitudes 3A and 2A interfering at a point have a phase difference of 60°. The intensity at that point will be proportional to
5 A2
13 A2
7 A2
19 A2
Consider the following statements in case of Young's double slit experiment.
Which ofthe above statements are correct ?
(1), (2) and (3)
(1) and (2)
(2) and (3)
(1) and (3)
A parallel beam of light ofwavelength 6000 gets diffracted by a single slit of width 0.3 mm. The angular position of the first minima of diffracted light is
2 × 10-3 rad
3 × 10-3 rad
1.8 × 10-3 rad
6 × 10-3 rad
The critical angle of a certain medium is . The polarizing angle of the medium is
B.
Polarising angle,
A monochromatic beam of light is travelling from medium A of refractive index n1 to a medium B of refractive index n2. In the medium A, there are x number of waves in certain distance. In the medium B, there are y number of waves in the same distance. Then, refractive index of medium A with respect to medium B is
In Young's double slit experiment, fringes of width β are produced on a screen kept at a distance of 1 m from the slit. When the screen is moved away by 5 x 10-2 m, fringe width changes by 3 x 10-5 m. The separation between the slits is 1 x 10-3 m The wavelength of the light used is
400 nm
500 nm
600 nm
700 nm
For sustained interference fringes in double slit experiment, essential condition/s is/are
Here, the correct option/s is/are
Neither (1) nor (2)
Both (1) and (2)
Only (1)
Only (2)