In the shadow of a ball the central portion appears bright that happens due to_________________?

Related Mcqs:

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...

Which one of the following is nearly monochromatic light ?

A. light form fluorescent tube B. light form neon lamp C. light form sodium lamp D. light form simple lamp...

When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?

A. polarization B. constructive interference C. destructive interference D. diffraction...

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...

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...