A thing that emits its own light is___________________?

Related Mcqs:

Which one of the following properties of light does not change with the nature of the medium ?

A. velocity B. wavelength C. amplitude D. frequency...

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...

In double slit experiment if one of the two slit is covered then________________?

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_________________?

A. Interference B. Diffraction C. Polarization D. Refraction...

Which is not optically active ?

A. sugar B. tartaric acid C. water D. sodium chlorate...