# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 410 - 413 of 2320

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## Question number: 410

» Laws of Motion » Force and Inertia

### Question

A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/tc revolutions per second around the vertical axis through the fixed end as Shown in the figure, then tension in the string is

### Choices

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

a. | 16 ML | |

b. | 5ML | |

c. | 4 ML | |

d. | 2 ML |

## Question number: 411

### Question

A horizontal force F is applied such that the block remains stationary, then which of the following statement is false

### Choices

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

a. | f = mg [where f is the friction force] | |

b. | F = N [where N is the normal reaction] | |

c. | N will not produce torque | |

d. | F will not produce torque |

## Question number: 412

» Laws of Motion » Force and Inertia

### Question

A stone of mass 1 kg tied to a light inextensible string of length L = 40/3 m is whirling in a circular path of radius L in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the suing is 4 and if g is taken to be 10m/sec ^{2}, the speed of the stone at the highest point of the circle is

### Choices

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

a. | 10 m/sec | |

b. | 5√2m/sec | |

c. | 20 m/sec | |

d. | 10√3m/Sec |

## Question number: 413

» Kinematics » Average Speed and Instantaneous Velocity

### Question

Consider two children riding on the merry-go-round Child 1 sits near the edge, Child 2 sits closer to the center. Let V1 and v2 denote the linear speed of child 1 and

Child 2, respectively. Which of the following is/are wrong?

Select the correct answers and mark it according to the following codes:

(1) We cannot determine V _{1} & V _{2} without more information

(2) v _{1} = v _{2}

(3) v _{1} < v _{2}

(4) v _{1} > v _{2}

### Choices

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

a. | 1 and 2 are correct | |

b. | 2 and 4 are correct | |

c. | 1,2 and 3 are correct | |

d. | 1 and 3 are correct |