# IGCSE Physics Paper-1: Specimen Questions with Answers 49 - 52 of 149

## Question 49

### Question

MCQ▾Speed-time graph at constant speed for 2 objects is given. Which particle traveled higher distance in first 3 sec?

### Choices

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

a. | object1 |

b. | object 2 |

c. | same speed |

d. | All of the above |

### Answer

a.### Explanation

For Object 1:

Here in given figure we show that an object 1 moving at constant speed 2 m/s.

Here we want to find the distance traveled by the object in first 3 sec. Therefore from formula of speed,

## Question 50

### Question

MCQ▾Find output voltage if transformer has 240 V connected to its primary with a primary coil of 1,200 turns and a secondary coil of 120 turns.

### Choices

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

a. | 200V |

b. | 240V |

c. | 2,400 V |

d. | 24V |

### Answer

d.### Explanation

Here Primary coil = 1,200 turns

Secondary coil = 120 turns are given.

Now, output voltage can be calculated as,

## Question 51

### Question

MCQ▾Find neutrons if an atom of lithium contains three protons and three electrons and nucleon number (mass number) of the atom is 7.

### Choices

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

a. | 3 |

b. | 6 |

c. | 10 |

d. | 4 |

### Answer

d.### Explanation

Number of neutron can be find as,

## Question 52

### Question

MCQ▾The weights of three objects are given. Which is heaviest?

### Choices

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

a. | object 3 |

b. | object 1 |

c. | object 2 |

d. | Question does not provide sufficient data or is vague |

### Answer

a.### Explanation

Here in above we shows that

In (a) diagram we shows that object 1 is heavier than object 2

In (b) diagram we shows that object 3 is heavier than object 2

So, we can say that objects 1 & 3 are heavier than the object 2

But from (c) diagram we can see that object 3 is heavier than the object 1. Therefore object 3 is heaviest than object 1 and 2.