1.
The condition for the first dark fringe in YDSE is
2.
The central bright fringe in Young's experiment is obtained because the path difference is
3.
The width of the central maximum in single-slit diffraction is
4.
If the slit width is reduced, diffraction pattern becomes
5.
Assertion (A): The fringe width in YDSE is independent of the order of the fringe. Reason (R): Fringe width depends only on wavelength, slit separation and screen distance.
6.
Assertion (A): Diffraction is observed with all types of waves. Reason (R): Diffraction occurs when the size of the obstacle is comparable to the wavelength.
7.
At Brewster's angle, the reflected and refracted rays are
8.
In a diffraction pattern, the intensity of secondary maxima
9.
The resolving power of a microscope increases when
10.
Which optical phenomenon limits the resolving power of optical instruments?
11.
The phase difference corresponding to constructive interference is
12.
The phenomenon responsible for colourful patterns in soap bubbles is
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