# IGCSE Physics Paper-1: Specimen Questions with Answers 47 - 49 of 149

## Question 47

### Question

MCQ▾

How we find temperature?

### Choices

Choice (4)

a.

Thermometer

b.

a force meter

c.

micrometer screw gauge

d.

a balance and a ruler

a.

### Explanation

A balance and a ruler is used to measure mass and length respectively.

Force meter is used to measure force. And screw gauge used to measure small length in range of micro

Therefore Thermometer is used to measure the temperature.

## Question 48

### Question

MCQ▾

Which switches must be closed to light both lamps based on the circuit diagram?

Choice (4)

a.

1 and 3

b.

1 and 2

c.

2 and 3

d.

1,2 and 3

a.

### Explanation

Here for two bulbs and three switches are connected as shown in figure. For lighting the bulb circuit should be closed for both the bulb. Therefore from figure switch 1 is connected to 1st bulb so it must be closed and switch 3 is connected to 2nd bulb so it also must be closed for passing the current through both the bulbs.

## Question 49

### Question

MCQ▾

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

Choice (4)

a.

object 1

b.

object 2

c.

same speed

d.

All of the above