# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 74 - 78 of 2320

Access detailed explanations (illustrated with images and videos) to **2320** questions. Access all new questions we will add tracking exam-pattern and syllabus changes. *Unlimited Access for Unlimited Time*! View Sample Explanation or View Features.

Rs. 600.00 or

How to register?

## Question number: 74

» Physics and Measurement » Errors in Measurement

### Question

The percentage errors in the measurement of mass and speed are 2 % and 3 % respectively. How much will be the maximum error in the estimation of the kinetic energy obtained by measuring mass and speed?

### Choices

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

a. | 1% | |

b. | 8 % | |

c. | 5 % | |

d. | 11 % |

## Question number: 75

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

### Question

The number of significant figures in all the given numbers 25.12,2009,4.156 and l. 217 x 10 - 4 is

### Choices

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

a. | 1 | |

b. | 2 | |

c. | 3 | |

d. | 4 |

## Question number: 76

» Kinematics » Motion in a Straight Line

### Question

A particle of mass m moves on the x-axis as follows: it starts from rest at t = 0 from the point x - 0 and comes to rest at t = 1 at the point x = 1. No other information is available about its motion at intermediate time (0 < t < 1). If a denotes the instantaneous acceleration of the particle, then

### Choices

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

a. | A cannot remain positive for all t in the interval 0 | |

b. | Cannot exceed 2 at any point in its path | |

c. | = 2 at any point in its path. | |

d. | Must be > 4 at some point or points in its path |

## Question number: 77

» Physics and Measurement » SI Units

### Question

10 the unit of Stefan’s constant a is

### Choices

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

a. | Wm | |

b. | Wm | |

c. | Wm | |

d. | Wm |

## Question number: 78

» Physics and Measurement » Errors in Measurement

### Question

A physical parameter a can be determined by measuring the parameters b, c, d and e using the relation a =

If the maximum errors in the measurement of b, c, d and e are b1 %, c1 %, d1 %, and e1 %, then the maximum error in the value of a determined by the experiment is

### Choices

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

a. | (b | |

b. | (b | |

c. | (b | |

d. | (b |