Question | Options |
---|---|

What is the number of significant figures in a measurment recorded as 8.70 X 10 ^ 4 kg : | 1, 4, 3, 7 |

At what angle the two vector of the same magnitude have tobe oriented if they were tobe combined to give a resultant equal to vector of the same magnitude : | 60 °, 72 °, 120 °, 36° |

Which of the following is a non Conservative force ? | Electric, Magnetic, Frictional, Gravitional |

A 100 gm golf ball is moving to the right with a velocity of 20m/sec and collides elastic with an 8.0 kg steel ball after collision will be ----- : | 19.5 m/sec, 0.5 m/sec, 2.5 m/sec, 13.5 m/sec |

The apparent weight of a man of mass 50 kg in a lift moving upward with an acceleration of 9.8 m/sec will be : | 980 N, 580 N, 490 N, Zero |

The terminal velocity of water drop of radius 0.010 cm descending through air from a high building is ----(co-efficient of viscosity "n" of air = 19 x 10-6 sec -1 and density of water = 1000 kg/m3) | 10.1 m/sec, 100.1 m/sec, 1.1 m/sec, 13.75 m/sec |

The unit torr is opted instead of SI unit of pressure .one torr is equal to : | 9.8 Nm-2, 133.3 Nm-2, 273.3 Nm-2, 1.0 Nm-2 |

Keeping the length constant and doubling the mass of the bob ,the time period of a pendulum will ----- : | Be double, Become four times, Remain constant, None Of These |

Length of a simple pendulum having a time period of 1.0 second will be ---- : | 9.8 m, 0.50 m, 0.75 m, 0.25 m |

The speed of sound is independent of ---- : | Medium, Source of sound, Pressure, Temperature |

Grating element of a grating plate containing 2000 lines /cm will be : | 0.001 mm, 0.003 mm, 0.005 mm, 0.025 mm |

The fundamental frequency of vibration of air column in a pipe with one end closed is 85 Hz the next two higher frequencies will be ----: | 170 Hz , 255 Hz, 255 Hz , 340 Hz, 170 Hz , 340 Hz, 255 Hz , 425 Hz |

When light enters from water into air, its speed ------ : | Increases, Decreases, Become Zero, Remains unchanged |

Near point of a normal human eye is ---- : | 25 cm, 25 MHz ? 30 MHz, zero cm, infinity |

For a diatomic gas C v = 5/2 R therefore gamma "y" for this gas is ------ : | 5 over 7, 4 over 35, 7 over 5, 35 over 4 |

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