# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1942 - 1945 of 2320

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## Question number: 1942

» Rotational Motion » Values of Moments of Inertia

### Question

A cylinder of 500 g and radius 10 cm has moment of inertia (about its natural axis)

### Choices

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

a. | 2 ⨯ 10 | |

b. | 5 ⨯ 10 | |

c. | 3.5 ⨯ 10 | |

d. | 2.5 ⨯ 10 |

## Question number: 1943

» Rotational Motion » Values of Moments of Inertia

### Question

Three particles of mass 1.5 kg are attached to the rim of a circular disc of radius 0.2 m & negligible mass. Moment of inertia of die system about an axis passing through the center of the disc & perpendicular to its plane is

### Choices

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

a. | 0.24 kg-m | |

b. | 0.18 kg-m | |

c. | l kg-m | |

d. | 2.2 kg-m |

## Question number: 1944

» Gravitation » Gravitational Acceleration

### Question

On a planet (whose size is the same as that of earth and mass 4 times to the earth) the energy needed to lift a 2 kg mass vertically upwards through 2 m distance on the planet is (g = l0 m/sec ^{2} on the surface of earth) –

### Choices

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

a. | 160 J | |

b. | 32 J | |

c. | 16 J | |

d. | 320 J |

## Question number: 1945

» Gravitation » Gravitational Acceleration

### Question

### Assertion (Ꭺ)

The universal gravitational constant is same as acceleration due to gravity.

### Reason (Ꭱ)

Gravitational constant and acceleration due to gravity have different dimensional formula.

### Choices

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

a. | Ꭺ is false but Ꭱ is true | |

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

c. | Ꭺ is true but Ꭱ is false | |

d. | Both Ꭺ and Ꭱ are false |