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1.
In the given arrangement, 
and 
are coherent sources (shown in figure). The point P is a point of
and are coherent sources (shown in figure). The point P is a point of
2.
In a wave, the path difference corresponding to a phase difference of 
is
is
3.
Which one of the following property of light does not support wave theory of light?
4.
Light waves travel in vacuum along the 
-axis. Which of the following may represent the wavefront?
-axis. Which of the following may represent the wavefront?
5.
In a biprism experiment, by using light of wavelength 
, 5mm wide fringes are obtained on a screen 1.0 m away from the coherent sources. The separation between the two coherent sources is
, 5mm wide fringes are obtained on a screen 1.0 m away from the coherent sources. The separation between the two coherent sources is
6.
In Young's double slit experiment, an interference pattern is obtained on a screen by a light of wavelength 
coming from the coherent sources and 
At certain point P on the screen third dark fringe is formed. Then the path difference 
in microns is
coming from the coherent sources and At certain point P on the screen third dark fringe is formed. Then the path difference in microns is
7.
A beam of plane polarized light falls normally on a polarizer of cross sectional area 
. Flux of energy of incident ray in 
. The polarizer rotates with an angular frequency of 
. The energy of light passing through the polarizer per revolution will be
. Flux of energy of incident ray in . The polarizer rotates with an angular frequency of . The energy of light passing through the polarizer per revolution will be
8.
In the Young's double slit experiment, a mica slip of thickness 
and refractive index 
is introduced in the ray from first source . By how much distance fringes pattern will be displaced.
and refractive index is introduced in the ray from first source . By how much distance fringes pattern will be displaced.
9.
Which of the following diagrams represent the variation of electric field vector with time for a circularly polarized light
10.
In a diffraction pattern by a wire, on increasing diameter of wire, fringe width