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At the point `P(a,a^(n))` on the graph of `y=x^(n)(n in N)` in the first quadrant at normal is drawn. The normal intersects the Y-axis at the point (0, b). If `underset(ararr0)(lim)b=(1)/(2)`, then n equals ……………

A

1

B

3

C

2

D

4

Text Solution

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The correct Answer is:
C
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