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Byju's Answer
Standard XII
Chemistry
Significant Figures
The time take...
Question
The time taken by a.c of 50 Hz in reaching from zero to maximum value is
A
1
×
10
−
2
sec
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B
2
×
10
−
2
sec
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C
50
×
10
−
3
sec
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D
5
×
10
−
3
sec
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Solution
The correct option is
D
5
×
10
−
3
sec
Using
T
=
1
v
=
1
50
For the given condition in question,
T
′
=
1
4
×
1
50
=
1
200
=
5
×
10
−
3
sec
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