# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 143 - 145 of 2320

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## Question number: 143

» Kinematics » Average Speed and Instantaneous Velocity

### Question

### Assertion (Ꭺ)

Two projectiles are launched from the top of a cliff with same initial speed with different angles of projection. They reach the ground with the same speed

### Reason (Ꭱ)

The work done by gravity is same in both the cases.

### Choices

Choice (4) | Response | |
---|---|---|

a. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |

b. | Ꭺ is false but Ꭱ is true | |

c. | Ꭺ is true but Ꭱ is false | |

d. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ |

## Question number: 144

» Kinematics » Average Speed and Instantaneous Velocity

### Question

A ball is projeced from O with an initial velocity 700 cm/s in a direction 37° above the horizontal. A ball B, 500 cml away from O on the line of the initial velocity of A, isl released from rest at the instant A is projected. The height! through which B falls, before it is hit by A and the directionl of the velocity A at the time of impact will respectively bel [given g = 10 m/s2, sin 37° = 0.6 and cos 37° = 8.0]

### Choices

Choice (4) | Response | |
---|---|---|

a. | 245 cm, 20° 44 | |

b. | 250 cm, 28° 42 | |

c. | 300 cm, 27° 43 | |

d. | 255 cm, 27° 43 |

## Question number: 145

» Kinematics » Uniform Circular Motion

### Question

The ratio of angular speeds of minute hand and hour hand of a watch is -

### Choices

Choice (4) | Response | |
---|---|---|

a. | 1: 6 | |

b. | 1: 12 | |

c. | 12: 1 | |

d. | 6: 1 |