I think its b too but i may be wrong
E=hf
Where h is constant
h - Planck constant
f - frequiency
E equals 6.626 times 10 in the minus 34th times 5.2 times 10 in the 15th
Equals 3.44552 time 10 in the minus 18th
Explanation:
Given that,
Initial speed of the electron,
Distance, s = 5 cm = 0.05 cm
Acceleration of the electron,
(a) Let v is the electron's velocity when it emerges from this region. It can be calculated as :
v = 871779.788 m/s
or
(b) Let t is the time for which the electron take to cross the region. It can be calculated as:
Hence, this is the required solution.
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