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

Vernier calipers read to one tenth of a millimetre. Which reading shows this precision? | 3.3 cm, 3.31 cm , 3.310 cm, 3.312 cm |

Which list contains only scalar quantities? | acceleration, displacement, mass, acceleration, distance, speed, displacement, mass, velocity, dis |

A tractor pulls a trailer at a constant speed. The tractor exerts a forward force of 1600 N on the trailer. What is the force exerted by the trailer on the tractor? | 0 N, 1600 N backwards, 1600 N forwards, 3200 N forwards |

room measures 4.0 m × 3.0 m × 2.0 m. The density of the air in the room is 1.3 kg / m3. What is the mass of air in the room? | 0.054 kg , 18 kg, 24 kg , 31 kg |

A man weighs 600 N. He runs up a staircase of total height 4.0 metres in 3.0 seconds. How much useful power is needed to do this? | 450 W , 800 W, 2400 W , 7200 W |

To calibrate a thermometer, without using another thermometer, fixed points are required. Which statement is correct? | Any temperatures can be used as fixed points., Both a lower fixed point and an upper fixed point ar |

A block of metal has a mass of 2.0 kg. Its specific heat capacity is 800 J / (kg °C). The block is supplied with 2400 J of energy. What is the rise in temperature? | 0.17 °C , 0.67 °C , 1.5 °C , 6.0 °C |

Which row describes the ease with which iron or steel can be magnetised and demagnetised? | metal iron magnetised difficult demagnetised easy, metal iron magnetised easy demagne |

Ohm’s law states that the current in a conductor is proportional to the potential difference across it, provided that a certain quantity remains constant. What is this quantity? | length, pressure, temperature, thickness |

Which costs the most if operated from the same mains supply? | a 5000 W electric cooker used for 1 minute, a 1000 W electric fire used for 10 minutes, a 500 W el |

Why is a transformer used to connect a generator in a power station to a long-distance transmission line? | to decrease the voltage and decrease the current, to decrease the voltage and increase the current, |

A radioactive isotope has a half-life of 6000 years. How much time passes before the rate of emission from a sample of this isotope falls to of its original value? | 6000 years, 18 000 years, 24 000 years, 96 000 years |

A nuclide of strontium is represented by the symbol 88 / 38 Sr What does the nucleus contain? | 38 electrons and 50 neutrons, 38 neutrons and 38 protons, 38 neutrons and 50 protons, 38 protons a |

The following statements are about motion. 1 A plane flies due East for 600 km. 2 A runner’s average speed in a race around a track is 5 m / s. 3 A snail crawls at 3 mm / s in a straight line towards a lettuce. 4 A tourist travels 500 km on a journey. Which statements describe vector quantities? | 1 to 2 , 1 to 3, 2 to 3, 3 to 4 |

Power is measured in watts. What is the correct symbol for millions of watts? | mw , mW, Mw , MW |

A student measures the speed of a trolley. At one instant, the speed of the trolley is 1.0 m / s and two seconds later the speed is 4.0 m / s. What is the acceleration of the trolley? | 1.5 m / s2 , 2.0 m / s2, 2.5 m / s2, 5.0 m / s2 |