# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 65 - 69 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: 65

» Physics and Measurement » Dimensions of Physical Quantities

### Question

If the time period (T) of vibration of a liquid drop depends on surface tension (S), radius (r) of the drop and density (ρ) of the liquid, then the expression of T is

### Choices

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

a. | T = k | |

b. | T = k | |

c. | T = k | |

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

## Question number: 66

» Kinematics » Motion in a Straight Line

### Question

A particle moves along x-axis as x = 4 (t - 3) + a (t - 4) ^{2}

Which of the following is true?

### Choices

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

a. | The initial velocity of particle is 4 | |

b. | The acceleration of particle is 2a | |

c. | The particle is at origin at t = 0 | |

d. | None of the above |

## Question number: 67

» Physics and Measurement » Errors in Measurement

### Question

Error in the measurement of radius of a circle is 1%. The error in the calculated value of its area is

### Choices

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

a. | 1% | |

b. | 2% | |

c. | 7% | |

d. | 3% |

## Question number: 68

» Kinematics » Motion in a Straight Line

### Question

a particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is

### Choices

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

a. | 4.0 m/s | |

b. | 5.5 m/s | |

c. | 4.8 m/s | |

d. | 5.0 m/s |

## Question number: 69

» Physics and Measurement » Errors in Measurement

### Question

A physical quantity A is related to four observable a, b, c and d as follows, A =

the percentage errors of measurement in a, b, c and d are 1%, 3%, 2 % and 2 % respectively. What is the percentage error in the quantity A?

### Choices

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

a. | 14% | |

b. | 12% | |

c. | 5% | |

d. | 7% |