Q.1.
The unit of magnetic flux is the
Q.2.
Resolving power of a telescope is
Q.3.
Two light sources are coherent when:
Q.4.
In young's double slit experiment
Q.5.
Resolving power of microscope depends upon
Q.6.
Surrounding every moving electron is
Q.7.
If a wave from one slit of a Young's double-slit experiment set-up arrives at a point on the screen one wavelength behind the wave from the other slit, what is observed at that point?
Q.8.
Two coherent sources of light can be obtained from
Q.9.
Resolving power of a microscope is
Q.10.
Coherent sources have
Q.11.
In the young's double slit experiment, if monochromatic light is replaced by white light , then
Q.12.
The fringe width in YDS expt on a screen which is placed at a distance offrom the slits 10-apart when light used has wavelength 6 X 10-7 m , is equal to :
Q.13.
If the ratio of amplitudes of two interfering waves is 4 : 3 , then the ratio of maximum and minimum intensity is :
Q.14.
In YDS expt , the intensity on the screen at a point where path difference is λ is K. what will be the intensity at the point where path difference is ( λ /4)
Q.15.
The phenomenon of diffraction can be exhibited by :
Q.16.
Light of wavelength 2 X 10-3 m falls on a slit of width 4 X 10-3 m. The angular dispersion of the central maximum will be :
Q.17.
Waves that cannot be polarised are:
Q.18.
Two polaroids are kept crossed to each other. Now one of them is rotated through an angle ofThe percentage of incident light now transmitted through the system is:
Q.19.
The fringe width of bands in YDS expt can be increased by:
Q.20.
The dual nature of light is exhibited?