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Two bodies \(A\) and \(B\) of same mass undergo completely inelastic one dimensional collision. The body \(A\) moves with velocity \(v_1\) while body \(B\) is at rest before collision. The velocity of the system after collision is \(v_2\). The ratio \(v_1:v_2\) is:

1. \(2:1\)

2. \(4:1\)

3. \(1:4\)

4. \(1:2\)

1. \(2:1\)

2. \(4:1\)

3. \(1:4\)

4. \(1:2\)

Subtopic: Collisions |

63%

From NCERT

NEET - 2024

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At any instant of time \(t\), the displacement of any particle is given by \(2t-1\) (SI unit) under the influence of force of \(5~\text N\). The value of instantaneous power is (in SI unit):

1. \(5\)

2. \(7\)

3. \(6\)

4. \(10\)

1. \(5\)

2. \(7\)

3. \(6\)

4. \(10\)

Subtopic: Power |

72%

From NCERT

NEET - 2024

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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 |

From NCERT

NEET - 2024

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A particle is displaced through \((3 \hat{i}+4 \hat{j})~\text{m}\) by force \(2 \hat{i}~\text{N}\). The work done is:

1. \(14~\text{J}\)

2. \(8~\text{J}\)

3. \(6~\text{J}\)

4. \(10~\text{J}\)

1. \(14~\text{J}\)

2. \(8~\text{J}\)

3. \(6~\text{J}\)

4. \(10~\text{J}\)

Subtopic: Work done by constant force |

81%

From NCERT

NEET - 2024

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The potential energy of a long spring when stretched by \(2\) cm is \(U\). If the spring is stretched by \(8\) cm, potential energy stored in it will be:

1. \(16U\)

2. \(2U\)

3. \(4U\)

4. \(8U\)

1. \(16U\)

2. \(2U\)

3. \(4U\)

4. \(8U\)

Subtopic: Elastic Potential Energy |

71%

From NCERT

NEET - 2023

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A 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 |

68%

From NCERT

NEET - 2023

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A bullet of mass \(m\) hits a block of mass \(M\) elastically. The transfer of energy is the maximum, when:

1. \(M=m\)

2. \(M=2m\)

3. \(M\ll m\)

4. \(M\gg m\)

1. \(M=m\)

2. \(M=2m\)

3. \(M\ll m\)

4. \(M\gg m\)

Subtopic: Collisions |

53%

From NCERT

NEET - 2023

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A particle moves with a velocity \((5\hat i-3\hat j+6\hat k)\) ms^{–1} horizontally under the action of constant force \((10\hat i+10\hat j+20\hat k)\) N. The instantaneous power supplied to the particle is:

1. \(200\) W

2. zero

3. \(100\) W

4. \(140\) W

1. \(200\) W

2. zero

3. \(100\) W

4. \(140\) W

Subtopic: Power |

75%

From NCERT

NEET - 2023

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The energy that will be ideally radiated by a \(100\) kW transmitter in \(1\) hour is:

1. \(1\times 10^{5}\) J

2. \(36\times 10^{7}\) J

3. \(36\times 10^{4}\) J

4. \(36\times 10^{5}\) J

1. \(1\times 10^{5}\) J

2. \(36\times 10^{7}\) J

3. \(36\times 10^{4}\) J

4. \(36\times 10^{5}\) J

Subtopic: Power |

74%

From NCERT

NEET - 2022

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NEET 2025 - Target Batch

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NEET 2025 - Target Batch

An electric lift with a maximum load of \(2000\) kg (lift+passengers) is moving up with a constant speed of \(1.5\) ms^{–1}. The frictional force opposing the motion is \(3000\) N. The minimum power delivered by the motor to the lift in watts is:

(Take \(g=10\) ms^{–2})

1. \(23500\)

2. \(23000\)

3. \(20000\)

4. \(34500\)

(Take \(g=10\) ms

1. \(23500\)

2. \(23000\)

3. \(20000\)

4. \(34500\)

Subtopic: Power |

63%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

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NEET 2025 - Target Batch

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