Question | Options |
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If the of a simple pendulum is halved its times period t will become : | T/2, T/?2, ?2 T, 2T |

The unit of frequency is --------- : | Newton, Meter, Cycle, Hertz |

The unit of intensity sound is ------------ : | Wm, Wm-2, Wm-1, Nm |

The refractive index of water is ------------- : | 1.33, 1, 2.42, 1.3 |

If the focal length of a lens is 2m,its power will be ----------- : | 2 D, 0.25 D, 0.5 D, 1.0 D |

The distance between two point charge is 20 cm .if the distance is reduced 10 cm the Coulombs force would become ---------- : | Half, Two Times, one Times, Four Times |

The power of an electic Fan is -------------- : | 80 Watts, 20 Watts, 90 Watts, 40 Watts |

The shape of magnetic lines of force in case of a straight current carrying conductor is ------ : | Elliptical, Circular, Triangular, Reactangular |

Which of the following radio-isotopes is used to diagnose the brain tumor ? | Cobalt - 60, Iodine -131, Carbon - 40, Phosphorus - 32 |

In an N-type crystal the majority carriers are ------------ : | Holes, Protons, Free Electrons, Positrons |

Which of the following discs is called the storage disc ? | Hard disc , Compact disc , Floppy disc , CD ROM |

What is the energy produced from 10 kg of carbon if it is completely changed into energy : | 3 X 10 ^ 9 J, 3 X 10 ^ 17 J, 3 X 10 ^ 16 J, None Of These |

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