A. waves
B. particles
C. photons
D. it was not his discovery
Correct Answer: photons ✔
Last Updated: February 11, 2021
Related MCQs
- Which experiment shows that wavelength of light is smaller than that of sound__________?
- Gives the definition of metre in terms of wavelength of red cadmium light __________?
- A thing that emits its own light is__________?
- Diffraction fringes are__________?
- Light on passing through a Polaroid is __________?
- A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to __________?
- Diffraction effect is__________?
- A light ray traveling form rarer to denser medium suffers a phase change of__________?
- appearance of colour in thin films is due to __________?
- The velocity of light was determined accurately by__________?
- Two sources of light are coherent if they emit rays of__________?
- The locus of all points in a medium having the same phase of vibration is called__________?
- Central spot of Newtons rings __________?
- Light reaches the earth form sun in nearly__________?
- When light incident normally on thin film the path difference depends upon __________?
- Which is not optically active ?
- Crystals of a material can behave as__________?
- In the shadow of a ball the central portion appears bright that happens due to__________?
- In double slit experiment if one of the two slit is covered then__________?
- In monochromatic red light a blue book will probably appear to be__________?
- Which one of the following cannot be polarized ?
- In a plane polarized light __________?
- Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is__________?
- 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 ?
- The blue colour of the sky is due to__________?
- In an interference pattern__________?
- In Young double slit experiment, if white light is used__________?
- When crest of one wave falls over the trough of the other wave this phenomenon is known as__________?
- Which one of the following is nearly monochromatic light ?
- A point source of light placed in a homogeneous medium gives rise to __________?
- Longitudinal waves do not exhibit __________?
- Photoelectric effect was given by __________?
- Which one of the following properties of light does not change with the nature of the medium ?
- In double slit experiment we observe __________?
- Optical active crystals rotates the __________?