The velocity of a particle moving in a straight line varies with time in such a manner that $v$ versus $t$ graph is velocity is $v_m$ and the total time of motion is $t_0$
(i) Average velocity of the particle is $\frac{\pi}{4} v_m$
(ii) Such motion cannot be realized in practical terms
Choose the correct option on the basis of above two statements.
Only (i) is correct.
Only (ii) is correct.
Both (i) and (ii) are correct.
Both (i) and (ii) are incorrect.
A conductor of length 0.6 m is moving with a speed of $5 \mathrm{~m} / \mathrm{s}$ perpendicular to a magnetic field of intensity $0.8 \mathrm{~Wb} / \mathrm{m}^2$. The induced emf across the conductor is
2.4 V
2.52 V
25.2 V
5.04 V
In given situation, force on charge $Q_3$ is

140 N
330 N
120 N
290 N
$$ \text { A } 2 \mu \mathrm{~F} \text { capacitor is charged as shown, } $$
When switch $S$ is shifted to position $2, \%$ of energy lost is
$0 \%$
$20 \%$
$75 \%$
$80 \%$
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