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.Management Sciences
Category: Physical Optics
appearance of colour in thin films is due to ____________________?
A. diffraction
B. dispersion
C. interference
D. polarization
The locus of all points in a medium having the same phase of vibration is called____________________?
A. crest
B. trough
C. wavelength
D. wave front
Gives the definition of metre in terms of wavelength of red cadmium light ___________________?
A. Newton
B. Einstein
C. Michelson
D. Galileo
In a plane polarized light _________________?
A. vibration in all direction
B. vibration in two mutually perpendicular directions
C. vibration take place in a direction perpendicular to the direction of propagation of light
D. no vibration at all
When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?
A. 5000 nm
B. 5000A
C. 500m
D. 2000um
Crystals of a material can behave as_________________?
A. Convex lens
B. Interferometer
C. Diffraction grating
D. Concave
A point source of light placed in a homogeneous medium gives rise to ___________________?
A. a cylindrical wave front
B. an elliptical wave front
C. a spherical wave front
D. a plane wave front
The blue colour of the sky is due to___________________?
A. diffraction
B. reflection
C. polarization
D. scattering
Two sources of light are coherent if they emit rays of_______________?
A. same wavelength
B. same amplitude of vibration
C. same wave length with constant phase difference
D. same amplitude and wavelength
The velocity of light was determined accurately by_______________?
A. Newton
B. Michelson
C. Huygen
D. Young
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