# NEET Physics: Questions 48 - 52 of 2099

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## Question number: 48

» Kinematics » Motion in a Straight Line

### Question

Time taken by an object falling from rest to cover the height of h1 and h2 is respectively t1 and t2 then the ratio of ty to t2 is

### Choices

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

a. | h | |

b. | : | |

c. | 2h | |

d. | h |

## Question number: 49

» Physics and Measurement » Errors in Measurement

### Question

Which of the following pairs have same dimensions?

### Choices

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

a. | Energy and wavelength | |

b. | Torque and Energy | |

c. | Angular momentum and work | |

d. | Energy and Young’s modulus |

## Question number: 50

» Physics and Measurement » Dimensions of Physical Quantities

### Question

X = 3YZ ^{2} find dimensions of Fin (MKSA) system, if X and Z are the dimensions of capacity and magnetic field respectively

### Choices

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

a. | [M | |

b. | [M | |

c. | [M | |

d. | [M L |

## Question number: 51

» Kinematics » Average Speed and Instantaneous Velocity

### Question

From the top of a multistoried building 40m tall, a boy projects a stone vertically upwards with an initial velocity of 10 ms ^{-1} such that it eventually falls to the ground.

(1) After 4 s the stone will strike the ground

(2) After 2 s the stone will pass through the point from where it was projected

(3) Its velocity when it strikes the ground is 30 m/s

(4) Its velocity when it strikes the ground is 40 m/s

### Choices

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

a. | 1, 2 and 3 | |

b. | 2 and 4 | |

c. | 1 and 3 | |

d. | 1 and 2 |

## Question number: 52

» Physics and Measurement » Dimensions of Physical Quantities

### Question

Number of particles crossing unit area perpendicular to X-axis in unit time is given by n =-D n 2 - n 1 x 2 - x 1

, where n1 and n2 are number of particles per unit volume in the position x1 and x2. Find dimensions of D called as diffusion constant.

### Choices

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

a. | [M | |

b. | [M0 L2 T | |

c. | [M | |

d. | [M |