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
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)
B.
Both (1) and (2)
For sustained interference, sources must be coherent and the intensities of two sources must be nearly equal.