In double slit experiment if one of the two slit is covered then________________? April 17, 2025 by admin A. no interference fringes are observed B. no diffraction fringes are observed C. no fringes observed D. interference pattern not disturbed
In the shadow of a ball the central portion appears bright that happens due to_________________? April 17, 2025 by admin A. Interference B. Diffraction C. Polarization D. Refraction
Crystals of a material can behave as_________________? April 17, 2025 by admin A. Convex lens B. Interferometer C. Diffraction grating D. Concave
Which is not optically active ? April 17, 2025 by admin A. sugar B. tartaric acid C. water D. sodium chlorate
When light incident normally on thin film the path difference depends upon ________________? April 17, 2025 by admin 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
Light reaches the earth form sun in nearly____________________? April 17, 2025 by admin A. 15 minutes B. 10 minutes C. 8 minutes D. 8 minutes 30 seconds
According to Einstein light travels form one place to another in the form of ________________? April 17, 2025 by admin A. waves B. particles C. photons D. it was not his discovery
Central spot of Newtons rings __________________? April 17, 2025 by admin A. bright B. dark for large wavelength C. dark D. bright for large wavelength
The locus of all points in a medium having the same phase of vibration is called____________________? April 17, 2025 by admin A. crest B. trough C. wavelength D. wave front
Two sources of light are coherent if they emit rays of_______________? April 17, 2025 by admin A. same wavelength B. same amplitude of vibration C. same wave length with constant phase difference D. same amplitude and wavelength
