appearance of colour in thin films is due to ____________________?
A. diffraction
B. dispersion
C. interference
D. polarization
Physics Mcqs
The velocity of light was determined accurately by_______________?
The velocity of light was determined accurately by_______________?
A. Newton
B. Michelson
C. Huygen
D. Young
Two sources of light are coherent if they emit rays of_______________?
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 locus of all points in a medium having the same phase of vibration is called____________________?
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
Central spot of Newtons rings __________________?
Central spot of Newtons rings __________________?
A. bright
B. dark for large wavelength
C. dark
D. bright for large wavelength
According to Einstein light travels form one place to another in the form of ________________?
According to Einstein light travels form one place to another in the form of ________________?
A. waves
B. particles
C. photons
D. it was not his discovery
Light reaches the earth form sun in nearly____________________?
Light reaches the earth form sun in nearly____________________?
A. 15 minutes
B. 10 minutes
C. 8 minutes
D. 8 minutes 30 seconds
When light incident normally on thin film the path difference depends upon ________________?
When light incident normally on thin film the path difference depends upon ________________?
A. thickness of the film only
B. nature of the film only
C. angle of indidence only
D. all thickness nature and angle of incidence
Which is not optically active ?
Which is not optically active ?
A. sugar
B. tartaric acid
C. water
D. sodium chlorate
Crystals of a material can behave as_________________?
Crystals of a material can behave as_________________?
A. Convex lens
B. Interferometer
C. Diffraction grating
D. Concave