There exists a region of electric field with potential difference of 25 V as shown in figure. An electron enters this region at speed of v = 3
×106 m/s at angle of
α and emerges out of region at angle
β. The
sin αsin β is [Electric field exist in given region only]
e=1.6×10−19,m=9.1×10−31 (2 decimal places)
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