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Figure shows an isosceles triangle wire frame with apex angle equal to `(pi)//2`. The frame starts entering into the region of uniform magnetic field B with constant velocity v at t =0. The longest side of the frame is perpendicular to the direction of velocity. If i is the intantaneous current through the frame then choose the alternative showing the correct variation of i with time.

A

B

C

D

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The correct Answer is:
D
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