Photoelectric effect was given by ____________________?

Related Mcqs:

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...

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...

Which is not optically active ?

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

A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?

A. 500 mm B. 5 x 10-3 mm C. 2 x 10-5 mm D. 2 x 10-3 mm...

Diffraction fringes are____________________?

A. equally spaced B. distance between them increases C. distance between then decreases D. they are adjacent with no space in between...