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The fringe width in YDS experiment can be increased by decreasing:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
In YDS experiment, condition for constructive interference is that path difference is equal to:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Experimental demonstration of wave nature of light was given in 1801 by:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
In YDS experiment, at the centre of screen is formed a:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
In an interference pattern of Young's Double Slit experiment:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
In case of constructive interference of two waves, the amplitude of the resultant wave is ______ either of the waves:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Phase change of $180^{\circ}$ is equivalent to a path difference of:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
The terms phase difference and path difference are:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
In case of destructive interference of two waves, the amplitude of the resultant wave will be ______ either of the waves
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
To observe interference of light, the condition, which must be met with is that the sources must be:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Two sources are said to be coherent if they have:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
The appearance of colors in the soap (or oil) film results from:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
The property of light which does not change with the nature of the medium is:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
A line which represents the direction of travel of a wave is known as:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Huygen's principle states that:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
The wave nature of light was proposed by:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Laws of reflection and refraction can also be explained by:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
The speed of the secondary wavelets as mentioned in Huygen's principle is _______ the speed of propagation of the wave itself
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
When the source of light is at very large distance, the shape of wavefront is:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
If $\lambda=400 nm$, its value in angstrom unit (=$10^{-10}m$) m is given as:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Speed of light in vacuum depends upon:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
In case of point source of light, shape of wavelength is:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Huygen principle is used to determine:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
Angle between ray of light and the corresponding wavefront is:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments
The locus of all the points in the same phase of vibration is called:
NETNUST Entry TestPhysicsPhysical Optics and Optical Instruments