Day 504: JEE Mains Physics

1. A.
   $3.60 \times 10^{- 8}$
2. B.
   $2.60 \times 10^{- 7}$
3. C.
   $1.87 \times 10^{- 3}$
4. D.
   $7.07 \times 10^{- 4}$

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1. A.
   $a = - 2\alpha v^{3}$
2. B.
   $a = - 5\alpha v^{5}$
3. C.
   $a = - 3\alpha v^{2}$
4. D.
   $a = - 4\alpha v^{4}$

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1. A.
   to oscillate the coil in magnetic field for longer period of time
2. B.
   to bring the coil to rest quickly
3. C.
   to produce large deflecting torque on the coil
4. D.
   to make the magnetic field radial

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