The velocity of light was determined accurately by_______________? April 17, 2025 by admin A. Newton B. Michelson C. Huygen D. Young
appearance of colour in thin films is due to ____________________? April 17, 2025 by admin A. diffraction B. dispersion C. interference D. polarization
A light ray traveling form rarer to denser medium suffers a phase change of__________________? April 17, 2025 by admin A. 60° B. 90° C. 180° D. 45°
Diffraction effect is____________________? April 17, 2025 by admin A. more for a round edge B. less for a round edge C. more for a sharp edge D. less for a sharp edge
A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________? April 17, 2025 by admin A. 500 mm B. 5 x 10-3 mm C. 2 x 10-5 mm D. 2 x 10-3 mm
Light on passing through a Polaroid is ___________________? April 17, 2025 by admin A. plane polarized B. un-polarized C. circularly polarized D. elliptically polarized
Diffraction fringes are____________________? April 17, 2025 by admin A. equally spaced B. distance between them increases C. distance between then decreases D. they are adjacent with no space in between
A thing that emits its own light is___________________? April 17, 2025 by admin A. luminous B. non-luminous C. incandescent D. bright
Gives the definition of metre in terms of wavelength of red cadmium light ___________________? April 17, 2025 by admin A. Newton B. Einstein C. Michelson D. Galileo
Which experiment shows that wavelength of light is smaller than that of sound___________________? April 17, 2025 by admin A. Diffraction B. Polarization C. Interference D. Reflection
