| (i) The maximum speed of the block will be\[\frac{QE}{\sqrt{mK}}\] |
| (ii) The maximum speed of the block will be \[\frac{2QE}{\sqrt{mK}}\]. |
| (iii) The maximum compression of the spring will be -\[\frac{QE}{K}\]. |
| (iv) The maximum compression of the spring will be \[\frac{2QE}{K}\]. |
A) Only (i) and (iii) are correct
B) Only (i) and (iv) are correct
C) Only (ii) and (iii) are correct
D) Only (ii) and (iv) are correct
Correct Answer: B
Solution :
[b] For maximum compression, \[\frac{1}{2}K{{x}^{2}}=QEx\] \[{{x}_{\max }}=\frac{2QE}{K}\] \[{{V}_{\max }}=\frac{QE}{\sqrt{mK}}\] (from conservation of energy)
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