# NEET Physics: Questions 348 - 351 of 2099

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## Question number: 348

### Question

There is an air filled l pF parallel plate capacitor. When the plate separation is doubled and the space is filled with wax, the capacitance increases to 2pF. The dielectric constant of wax is

### Choices

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

a. | 6 | |

b. | YO 8 | |

c. | 4 | |

d. | 2 |

## Question number: 349

» Laws of Motion » Force and Inertia

### Question

A cricket ball of mass 250 gm moving with a velocity of 25 m/s is hit by a bat so that it acquires a velocity of 30 m/s in the opposite direction. The force acting on the ball, if the contact time is 1/100 of a second, will be -

### Choices

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

a. | 632.5 N in the initial direction of ball | |

b. | 1300 N in the final direction of ball | |

c. | 1.345 N in the initial direction of ball | |

d. | 130 N in the final direction of ball |

## Question number: 350

### Question

In the figure a capacitor is filled with dielectrics K _{1}, K _{2 } and K _{3}. The resultant capacitance is

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | None of the above |

## Question number: 351

» Rotational Motion » Angular Momentum

### Question

If the earth is a point mass of 6 x l0 ^{24 } kg revolving around the sun at a distance of 1.5xl0 ^{8} km and in time T = 3.14 xl0 ^{7} s. Then the angular momentum of the earth around the sun is

### Choices

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

a. | 1.8 x 10 | |

b. | 2.7 x 10 | |

c. | 1.5 x 10 | |

d. | 1.2 x 10 |