Two sources of light are coherent if they emit rays of_______________?

Related Mcqs:

In Young double slit experiment, if white light is used____________________?

A. alternate dark and bright fringes will be seen B. coloured fringes will be seen C. no interference fringes will be seen D. impossible to predict...

The blue colour of the sky is due to___________________?

A. diffraction B. reflection C. polarization D. scattering...

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________________?

A. 4 x 10-10 m B. 2 x 10-10 m C. 0.02×10-10m D. 20×10-10m...

A light ray traveling form rarer to denser medium suffers a phase change of__________________?

A. 60° B. 90° C. 180° D. 45°...

Diffraction effect is____________________?

A. more for a round edge B. less for a round edge C. more for a sharp edge D. less for a sharp edge...