# Gravitation-Gravitational Acceleration (NEET Physics): Questions 5 - 9 of 19

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to **2099** questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 5

» Gravitation » Gravitational Acceleration

### Question

Two planets of radii in the ratio 1: 2 are made from the materials of density in the ratio 3: 1. Then the ratio of acceleration due to gravity g _{1} /g _{2} at the surface of two planets will be

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | 1 |

## Question number: 6

» 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. | 320 J | |

c. | 16 J | |

d. | 32 J |

## Question number: 7

» Gravitation » Gravitational Acceleration

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

b. | Ꭺ is true but Ꭱ is false | |

c. | Ꭺ is false but Ꭱ is true | |

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

## Question number: 8

» Gravitation » Gravitational Acceleration

### Question

At what height above the earth’s surface the acceleration due to gravity will be of its value at the earth’s surface? Radius of earth is 6400 km

### Choices

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

a. | 25600 km | |

b. | 2228 km | |

c. | 12800 km | |

d. | 2560 km |

## Question number: 9

» Gravitation » Gravitational Acceleration

### Question

If the radius of the earth were to shrink by one percent its mass remaining the same, the acceleration due to gravity on the earth’s surface would -

### Choices

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

a. | Decrease | |

b. | Remain unchanged | |

c. | Increase | |

d. | Question does not provide sufficient data or is vague |