In a cathode-ray tube, a beam of electrons is projected horizontally with a speed of 9.6 X 108 cm/s into the region between a pair of horizontal plates 2.3 cm long. An electric field between the plates causes a constant downward acceleration of the electrons of magnitude 9.4 X 1016 cm/s2 Find (a) the time required for the electrons to pass through the plates, (b) the vertical displacement of the beam in passing through the plates, and (c) the horizontal and vertical components of the velocity of the beam as it emerges from the plates.

Simran Bhatia , 9 Years ago

Grade 11