# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 27 - 34 of 2320

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## Question number: 27

» Physics and Measurement » Errors in Measurement

### Question

A thin copper wire of length/metre increases in length by 2 % when heated through 10°C. Which is not the percentage increase in area when a square copper sheet of length/metre is heated through 10°C?

### Choices

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

a. | 12% | |

b. | 14% | |

c. | 16% | |

d. | 4% |

## Passage

The internal radius of a 1 m long resonance tube is measured as 3 cm. A tuning fork of frequency 2000 Hz is used. The first resonating length is measured as 4.6 cm and the second resonating length is measured as 14.0 cm.

## Question number: 28 (1 of 3 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

### Question

Calculate the maximum percentage error in measurement of e.

### Choices

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

a. | 4.33% | |

b. | 2.23% | |

c. | 5.33% | |

d. | 3.33% |

## Question number: 29 (2 of 3 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

### Question

Calculate the end correction.

### Choices

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

a. | 0.1 cm | |

b. | 0.3 cm | |

c. | 0.4 cm | |

d. | 0.2 cm |

## Question number: 30 (3 of 3 Based on Passage) Show Passage

» Physics and Measurement » Errors in Measurement

### Question

Calculate the speed of sound at the room temperature.

### Choices

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

a. | 376 m/s | |

b. | 275 m/s | |

c. | 330 m/s | |

d. | 356 m/s |

## Question number: 31

» Kinematics » Motion in a Straight Line

### Question

the acceleration of a particle is increasing linearly with time t as bt. The particle starts from the origin with an initial velocity v0. The distance travelled by the particle in time t will be

### Choices

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

a. | v | |

b. | v | |

c. | v | |

d. | v |

## Question number: 32

» Kinematics » Motion in a Straight Line

### Question

If the displacement of a particle is (5t ^{2} + 2t + 5) meter then, what will be ace. at t = 5 second?

### Choices

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

a. | 20 m/s | |

b. | 4 m/s | |

c. | 21 m/s | |

d. | 1 0 m/s |

## Question number: 33

» Kinematics » Motion in a Straight Line

### Question

If the displacement of a particle is (2t ^{2} + t + 5) meter then, what will be ace. at t = 5 second?

### Choices

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

a. | 21 m/s | |

b. | 10 m/s | |

c. | 20 m/s | |

d. | 4 m/s |

## Question number: 34

» Kinematics » Motion in a Straight Line

### Question

the displacement x of a particle varies with time t, x = a + b , where a, b, α and β are positive constants.

The velocity of the particle will

### Choices

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

a. | Be independent of α and β | |

b. | Drop to zero when α = β | |

c. | Go on decreasing with time | |

d. | Go on increasing with time |