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Tardigrade
Question
Physics
An electron falls through a distance h in a uniform electric field E, the direction of E is reversed and a proton falls through the same distance. The ratio of the time of fall of electrons to that of the proton is
Q. An electron falls through a distance
h
in a uniform electric field
E
,
the direction of
E
is reversed and a proton falls through the same distance. The ratio of the time of fall of electrons to that of the proton is
1699
226
Electric Charges and Fields
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A
m
p
m
e
15%
B
m
e
m
p
20%
C
m
p
m
e
43%
D
m
e
m
p
21%
Solution:
a
=
m
e
E
;
h
=
2
1
a
t
2
or
t
=
a
2
h
⇒
t
=
e
E
2
h
⋅
m
Thus,
t
P
t
e
=
m
P
m
e
.