When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is
I0 /2
I0 /4
zero
zero
Unpolarized light of intensity I passes through an ideal polarizer A. Another identical polarizer B is placed behind A. The intensity of light beyond B is found to be I/2.Now another identical polarizer C is placed between A and B. The intensity beyond B is now found to be I/8. The angle between polarizer A and C is :
60°
0°
30°
45°
In Young's double slits experiment, if the separation between the slits is halved, and the distance between the slits and the screen is doubled, then the fringe width compared to the original one will be
Unchanged
Halved
Doubled
Quadrupled
Huygens' wave theory of light cannot explain
Diffraction phenomena
Interference phenomena
Photoelectric effect
Polarization of light
C.
Photoelectric effect
Huygen's wave theory of light cannot explain the photoelectric effect. Because it is due to particle nature of light.
For a diffraction from a single slit, the intensity of the central point is
infinite
finite and same magnitude as the surrounding maxima
finite but much larger than the surrounding maxima
finite and substantially smaller than the surrounding maxima
If a ray of light is incident at a glass surface at the Brewster's angle of 60°, then the angle of deviation inside glass is
90°
60°
45°
30°
In Young's double slit experiment, to increase the fringe width
the wavelength of the source is increased
the source is moved towards the slit
the source is moved away from the slit
the slit separation is increased
Light of wavelength 5000 is incident normally on a slit of width 2.5 x 10-4 cm. The angular position of second minimum from the central maximum is
If the intensity ratio of two coherent sources used in Young's double slit experiment is 49 : 1, then the ratio between the maximum and minimum intensities in the interference pattern is
1 : 9
9 : 16
16 : 9
16 : 25