- 1(current)
Q. No.Object \(A\) has half the kinetic energy as that of object \(B.\) The object \(B\) has half the mass as that of the object \(A.\) The object \(A\) speeds up by \(1~\text{ms}^{-1}\) and then has the same kinetic energy as that of object \(B.\) The initial speed of object \(A\) is nearly: (Take \(\sqrt2\cong1.4\))
1. \(0.5~\text{ms}^{-1}\)
2. \(1~\text{ms}^{-1}\)
3. \(2.5~\text{ms}^{-1}\)
4. \(4.8~\text{ms}^{-1}\)
1. \(0.5~\text{ms}^{-1}\)
2. \(1~\text{ms}^{-1}\)
3. \(2.5~\text{ms}^{-1}\)
4. \(4.8~\text{ms}^{-1}\)
Subtopic: Work Energy Theorem |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn object moving along a horizontal \(x\text-\)direction with kinetic energy \(10~\text J\) is displaced through \(x=\left(3\hat{i}\right)\text{m}\) by the force \(\vec{{{F}}}=\left(-2\hat{i}+3\hat{j}\right)~\text N.\) The kinetic energy of the object at the end of the displacement \(x\) is:
| 1. | \(10~\text J\) | 2. | \(16~\text J\) |
| 3. | \(4~\text J\) | 4. | \(6~\text J\) |
Subtopic: Work Energy Theorem |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA bullet from a gun is fired on a rectangular wooden block with velocity \(u\). When bullet travels \(24\) cm through the block along its length horizontally, velocity of bullet becomes \(u/3\). Then it further penetrates into the block in the same direction before coming to rest exactly at the other end of the block. The total length of the block is:
1. \(30\) cm
2. \(27\) cm
3. \(24\) cm
4. \(28\) cm
1. \(30\) cm
2. \(27\) cm
3. \(24\) cm
4. \(28\) cm
Subtopic: Work Energy Theorem |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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